JP5104917B2 - Driving method of display device - Google Patents

Description

This invention relates to a driving method of Viewing device that displays a three-dimensional image.

  As a liquid crystal display device that displays a three-dimensional image, conventionally, among the plurality of pixel columns along the vertical direction of the screen of the liquid crystal display panel, an image for the left eye is displayed by each pixel of every other pixel column, An image for the right eye is displayed by each pixel in every other pixel row, and the image for the left eye and the image for the right eye are displayed as the light emitted from the every other pixel row and the other one. A lenticular lens that distributes the emitted light from the pixel row to the left and right eye directions of the display observer, or a plurality of transmission portions and light shielding portions parallel to the pixel row are alternately arranged in a stripe shape There is one in which the left eye and the right eye of an observer are observed through a parallax barrier (see Patent Documents 1, 2, and 3).

Japanese Laid-Open Patent Publication No. 3-19889 Japanese Patent Laid-Open No. 7-005455 Japanese Patent Laid-Open No. 10-268230

This invention is intended to provide a driving method that can be Ru Viewing apparatus for displaying the three-dimensional image in a novel manner.

In order to solve the above problems, an embodiment of a display device driving method according to the present invention includes a display panel in which a plurality of pixels are arranged, a light guide plate that emits light toward the display panel, A first light emitting element disposed on one side surface, a second light emitting element disposed on a second side surface opposite to the first side surface of the light guide plate, the first light emitting element, and the light guiding element. Between the first linearly polarizing element disposed between the first side surface of the light plate and having a transmission axis in one direction, and between the second light emitting element and the second side surface of the light guide plate A second linearly polarized light element having a transmission axis in the other direction orthogonal to the one direction, and disposed on the opposite side of the viewing side of the display panel, and the first light emitting element and the The polarization directions of the light emitted from each of the second light emitting elements and irradiated from the light guide plate are As will be parallel to the one polarization direction of the interlinking polarization, and, between the polarizer transmission axis so as to be perpendicular to the other polarization direction is set, and the light guide plate and the front Kihen light plate The polarization direction of light in a predetermined wavelength region is 90 ° alternately arranged in vertical stripes along the vertical direction of the screen at an arrangement interval corresponding to the arrangement interval of the plurality of pixels of the display panel. a phase difference portion for rotating, and no phase difference unit, and the phase difference element consisting of, wherein the first pixel row with the coordinate position of the first pixel row is an image for the left eye in the image data First selected image data in which the coordinate position of the second pixel column adjacent to the image is for the right eye, and the coordinate position of the first pixel column is the image for the right eye, and the second pixel column Second selected image data whose coordinate position is an image for the left eye, and The first light emitting element is made to emit light in synchronization with the step of splitting and outputting to the display panel and the output switching timing between the first selected image data and the second selected image data. A first irradiation state in which the second light emitting element is in a non-light emitting state, and a second irradiation state in which the first light emitting element is in a non-light emitting state and the second light emitting element is in a light emitting state. has the steps of switching a, characterized in that.

According to the present invention, it is possible to provide a driving method of a display device capable of displaying the three-dimensional image by a novel method.

1 is an exploded perspective view of a liquid crystal display device showing a first embodiment of the present invention. The top view of the said liquid crystal display device. FIG. 3 is an outgoing ray diagram when displaying a left-eye image and a right-eye image of the liquid crystal display device. FIG. 3 is an outgoing ray diagram when a first light emitter from a surface light source of the liquid crystal display device is turned on. FIG. 4 is an outgoing ray diagram when a second light emitter from a surface light source of the liquid crystal display device is turned on. FIG. 6 is an intensity distribution diagram of the outgoing light intensity of linearly polarized light in two directions when the first light emitter from the surface light source is turned on. FIG. 4 is an intensity distribution diagram of the outgoing light intensity of linearly polarized light in two directions when the second light emitter from the surface light source is turned on. The top view of the liquid crystal display device which shows the modification of a 1st Example. The perspective view of the light guide means of the surface light source which shows the other modification of a 1st Example, the 1st and 2nd light-emitting body, and the 1st and 2nd linearly polarized light element. The top view of the liquid crystal display device which shows 2nd Example of this invention. The display principle figure of the image for left eyes when the 1st illumination light is irradiated from the light source of the liquid crystal display device of a 2nd Example, and the image for right eyes. The display principle figure of the image for left eyes when the 2nd illumination light is irradiated from the light source of the liquid crystal display device of a 2nd Example, and the image for right eyes. The schematic diagram of the display image of the liquid crystal display panel in the liquid crystal display device of a 2nd Example. The perspective view of the liquid crystal display device which shows the 3rd Example of this invention. The top view of the liquid crystal display device of a 3rd Example. The perspective view of the liquid crystal display device which shows the 4th Example of this invention.

(First embodiment)
1 to 7 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view of a liquid crystal display device, and FIG. 2 is a plan view of the liquid crystal display device.

  In this liquid crystal display device, as shown in FIGS. 1 and 2, polarizing plates 5 and 6 are arranged on the observation side (upper side in FIG. 2) and the opposite side, respectively, and a plurality of pixels (FIG. A liquid crystal display panel 1 having a screen area 1a arranged in a matrix in a row direction and a column direction, image data is written in the plurality of pixels, and an image corresponding to the image data is displayed; A surface light source 7 disposed on the opposite side of the liquid crystal display panel from the observation side, the liquid crystal display panel 1 and a driving means 33 for the surface light source 7 are provided.

  The liquid crystal display panel 1 is an active matrix liquid crystal display panel, the internal structure of which is not shown, but one of the opposing inner surfaces of a pair of transparent substrates 2 and 3 joined via a frame-shaped sealing material 4. A plurality of transparent pixels formed in a matrix in the row direction (left-right direction of the screen) and the column direction (up-down direction of the screen) on the inner surface of the other substrate, for example, the substrate 3 opposite to the observation side Electrodes, a plurality of TFTs (thin film transistors) connected to these pixel electrodes, a plurality of gate wirings for supplying gate signals to the TFTs in each row, and a plurality of data wirings for supplying image data signals to the TFTs in each column And a single film-like transparent counter electrode facing the plurality of pixel electrodes is provided on the inner surface of the other substrate (observation side substrate) 2, and the seal between the pair of substrates 2 and 3 is provided. A liquid crystal layer is sealed in a region surrounded by 4.

Further, the liquid crystal display panel 1, the are of the TN type obtained by twist-aligned liquid crystal layer twist angle of the liquid crystal molecules Te said pair of substrates 2 and 3 between odor 9 0 °, its viewing side polarizing plate 5 The opposite side polarizing plates 6 are arranged so that their transmission axes are orthogonal or parallel to each other. In FIG. 1, 6 a is a transmission axis of the opposite side polarizing plate 6.

The surface light source 7 has incident portions 9a and 9b that allow light to enter, an exit surface 10 that emits light incident from the incident portions 9a and 9b, and light incident from the incident portions 9a and 9b toward the exit surface 10. The light guide means 8 that guides the light incident from the incident portions 9a and 9b and emits the light from the exit surface 10, and faces the incident portions 9a and 9b of the light guide means 8. The first and second light emitters 24 and 25 that are arranged and selectively lit, and have transmission axes 26a and 27a in one direction, and the first and second light emitters 24 and 25 respectively on the emission side, the first and second linear polarizing elements 26 and 27, each of the transmission shaft 26a, a 27a disposed so straight interlinked, are arranged to face the output surface 10 of the light guiding means 8 The phase difference element 28 and the side of the phase difference element 28 facing the light guiding means 8 And a lens array 31 provided on the opposite side.

  The light guide means 8 is made of a transparent plate such as an acrylic resin plate having a rectangular planar shape corresponding to the screen area 1a of the liquid crystal display panel 1, and the incident portions 9a are respectively provided at two opposing end surfaces thereof. , 9b are formed, the exit surface 10 is formed on one of the two plate surfaces, and the reflection surface 11 that reflects the light incident from the incident portions 9a, 9b toward the exit surface 10 on the other plate surface. Is formed. Hereinafter, the light guide 8 is referred to as a light guide plate, and the incident portions 9a and 9b are referred to as incident end surfaces.

The exit surface 10 of the light guide plate 8 is formed on the flat surface, the reflective surface 11, the incident end face 9a, 9b in the longitudinal direction, i.e. the light guide plate 8 transverse direction and flat lines of a plurality of linear The elongated grooves 12 are formed at a constant pitch in the length direction of the light guide plate 8.

  The light guide plate 8 reflects light incident from the incident end faces 9 a and 9 b in the length direction of the light guide plate 8 while internally reflecting the flat surface portion between the elongated grooves 12 of the reflection surface 11 and the emission surface 10. The light incident on each of the elongated grooves 12 of the reflecting surface 11 is internally reflected in the direction in which the angle with respect to the normal direction of the emitting surface 10 is reduced by the groove surface of the elongated groove 12 and is emitted from the emitting surface 10. Let

Each elongated groove 12 of the reflecting surface 11 of the light guide plate 8 at an angle of respectively are 4 5 ° on one incident end surface 9a direction and the other of the entrance end surface 9b direction with respect to the normal direction of the emission surface 10 It is formed in an isosceles triangular cross section having two inclined groove surfaces, and the light incident from one incident end face 9a of the light guide plate 8 is emitted from the groove face on the one incident end face 9a side. The light reflected from the inner surface in the direction near the normal line of the surface 10 and incident from the other incident end surface 9b of the light guide plate 8 is directed in the direction near the normal line of the output surface 10 by the groove surface on the other incident end surface 9b side. Internal reflection.

  Therefore, the light incident on the light guide plate 8 from the one incident end surface 9a and the other incident end surface 9b and emitted from the output surface 10 of the light guide plate 8 is emitted light intensity in the normal direction of the output surface 10 respectively. It is light with directivity in which there is a peak.

  In the figure, the elongated groove 12 of the reflecting surface 11 of the light guide plate 8 is greatly exaggerated. However, the elongated groove 12 is formed at a pitch that is the same as or smaller than the pixel pitch of the liquid crystal display panel 1. Therefore, the light emitted from the emission surface 10 of the light guide plate 8 is light having a uniform intensity distribution with no intensity unevenness.

  The first and second light emitters 24 and 25 are each composed of a light emitting element array in which a plurality of solid state light emitting elements such as LEDs (light emitting diodes) are arranged. The incident end face 9a and the other incident end face 9b are arranged to face each other.

Further, the first and second linearly polarizing elements 26 and 27 are formed in a shape corresponding to the incident end faces 9a and 9b of the light guide plate 8, and one incident end face 9a of the light guide plate 8 and the outside thereof. The linearly polarizing elements between the first light emitter 24 arranged on the second light emitter 24 and between the other incident end surface 9b of the light guide plate 8 and the second light emitter 25 arranged outside the light incident plate 26 and 27 of the transmission shaft 26a, a 27a are arranged with straight interlinked.

In this embodiment, as shown in FIG. 1, the first linear polarizing element 26, to its transmission axis 26a width direction of the light guide plate 8 (incident end surface 9a, the length direction of 9b) and the flat line Te place, the second linear polarization element 27 are arranged the transmission axes 27a in the thickness direction (incident end face 9a, the height direction of 9b) and the flat line of the light guide plate 8.

In addition, the phase difference element 28 disposed so as to face the emission surface 10 of the light guide plate 8 is 1 / between the normal light and the abnormal light of the transmitted light in the direction along the emission surface 10 of the light guide plate 8. a plurality of lambda / 2 phase difference unit 29 for giving a phase difference of two wavelengths, which a plurality of non-phase difference unit 30 with no phase difference are formed alternately, said plurality of lambda / 2 phase difference unit 29 as shown in FIG. 1, it has a slow axis 29a the width direction (incident end face 9a, 9b length direction) of the light guide plate 8 4 5 ° inclined direction with respect.

That is, the slow axes 29 a of the plurality of λ / 2 phase difference portions 29 are transmitted from the first light emitter 24 through the first linearly polarizing element 26 and incident on the light guide plate 8. The linearly polarized light emitted from the light emitting surface 10 and the second linearly polarized light element 27 are transmitted through the second light emitter 25 and incident on the light guide plate 8, and emitted from the light output surface 10 of the light guide plate 8. to the plane of polarization of both the linearly polarized light by intersecting at an angle of 4 5 °.

  The plurality of λ / 2 phase difference portions 29 and the non-phase difference portions 30 of the phase difference element 28 have the same width and one direction along the emission surface 10 of the light guide plate 8, for example, the light guide plate 8. Are formed in a stripe shape parallel to the width direction (the length direction of the incident end faces 9a and 9b).

  In the figure, the λ / 2 phase difference portion 29 and the non-phase difference portion 30 are greatly exaggerated, but the λ / 2 phase difference portion 29 and the non-phase difference portion 30 are formed with the smallest possible width and pitch. ing.

Or the retardation element 28, on one surface of the transparent sheet which respect the transmitted light does not exhibit birefringence, for example, kicking affixed lambda / 2 retardation film of elongated consisting uniaxially stretched film arranged in stripes Alternatively, a plurality of λ / 2 positions can be obtained by coating or printing a polymer liquid crystal on the transparent sheet surface and polymerizing the polymer liquid crystal by aligning the major molecular axes in one predetermined direction. A portion in which a retardation layer is formed, and the plurality of λ / 2 retardation portions 29 are formed by the formation portions of the λ / 2 retardation layers, and the portion of the transparent sheet where the λ / 2 retardation layers are not formed. Thus, the plurality of non-phase-difference portions 30 are formed.

Further, the lens array 31 provided on the opposite side of the phase difference element 28 from the side facing the light guide plate 8 has no adjacent λ / 2 phase difference portion 29 adjacent to the phase difference element 28. A plurality of lenses 32 respectively corresponding to a plurality of regions including the phase difference portion 30 are provided. These lenses 32 are a λ / 2 phase difference portion 29 and a non-phase difference portion 30 formed in the stripe shape. the parallel to the length direction, and is formed in an elongated shape and having a total width and the same width of the adjacent one at a lambda / 2 phase difference unit 29 with no phase difference unit 30.

  In this embodiment, the lens array 31 is integrally formed on the surface opposite to the surface on which the λ / 2 phase difference portion 29 of the phase difference element 28 is formed. An element manufactured separately from the phase difference element 28 may be arranged to face the phase difference element 28.

  The lens array 31 emits light that has been emitted from the emission surface 10 of the light guide plate 8 and transmitted through the λ / 2 phase difference portions 29 of the plurality of regions of the phase difference element 28 by the plurality of lenses 32 in advance. Light emitted in a first emission direction tilted in one direction with respect to a predetermined direction and transmitted through the non-phase difference portions 30 of the plurality of regions is transmitted in the predetermined direction by the plurality of lenses 32. On the other hand, the light is emitted in a second emission direction inclined in a direction opposite to the one direction.

  In this embodiment, the predetermined direction is the normal direction of the exit surface 10 of the light guide plate 8, and the plurality of lenses 32 of the lens array 31 are the normal direction of the exit surface 10 of the light guide plate 8. A convex lens that is parallel and that is symmetrical with respect to a plane passing through the boundary between the λ / 2 phase difference portion 29 and the non-phase difference portion 30 of the plurality of regions is formed.

  The lens array 31 is incident on the light guide plate 8 from its incident end surfaces 9 a and 9 b, is reflected by the groove surface of each elongated groove 12 of the reflection surface 11 of the light guide plate 8, and is emitted from the light exit surface 10 of the light guide plate 8. Of the light emitted in the direction near the normal line of the emission surface 10, the light transmitted through the λ / 2 phase difference portions 29 of the plurality of regions of the phase difference element 28 is used as the method of the emission surface 10 of the light guide plate 8. A plurality of the phase difference elements 28 are emitted in the direction of an angle range in which the peak of the emitted light intensity exists in the first emission direction inclined in the direction opposite to the λ / 2 phase difference portion 29 side with respect to the line direction. The light transmitted through the non-phase-difference portion 30 in this area is emitted in a second emission direction inclined in the direction opposite to the non-phase-difference portion 30 side with respect to the normal direction of the emission surface 10 of the light guide plate 8. It emits in the direction of the angle range where the peak of the emission intensity exists.

That is, the surface light source 7, by one of the lighting of the first and second light emitter 24, 25, one of the straight interlinks two directions of linearly polarized light in the first emission direction, the other linear polarized light Are emitted in the second emission direction, and when the other light emitter is turned on, the one linearly polarized light is emitted in the second emission direction, and the other linearly polarized light is emitted in the first emission direction.

  4 and 5 are diagrams of light rays emitted from the surface light source 7. FIG. 4 shows light rays emitted when the first light emitter 24 is turned on. FIG. 5 shows lights emitted from the second light emitter 25. FIG. The emitted light is shown.

  As shown in FIG. 4, when the first light emitter 24 of the surface light source 7 is turned on, the light from the first light emitter 24 is transmitted by the first linearly polarizing element 26 with its transmission axis 26 a. Is incident on the light guide plate 8 from one incident end face 9a, and is reflected by the groove surface on the one incident end face 9a side of each elongated groove 12 of the reflective surface 11 of the light guide plate 8. Then, the light is emitted from the light exit surface 10 of the light guide plate 8 in the direction near the normal line of the light exit surface 10.

The linearly polarized light S emitted from the emission surface 10 of the light guide plate 8 is incident on the phase difference element 28, and is incident on a λ / 2 phase difference portion 29 in a plurality of regions of the phase difference element 28. and light is, the lambda / 2 phase difference portion 29 having a slow axis 29a in the angular direction of 4 5 ° with respect to the polarization plane, the plane of polarized light by the lambda / 2 phase difference unit 29 90 ° is rotated transmitted, enters the first of the lens array 31 becomes straight interlinking linearly polarized light P and to linearly polarized light S transmitted through the linearly polarizing element 26 is incident on the light guide plate 8.

Of the light emitted from the exit surface 10 of the light guide plate 8 and incident on the phase difference element 28, the light incident on the non-phase difference portions 30 of the plurality of regions of the phase difference element 28 is The light is transmitted through the phase difference portion 30 without changing the polarization state, is transmitted through the first linearly polarizing element 26 and is incident on the lens array 31 with the linearly polarized light S incident on the light guide plate 8.

  Of the linearly polarized light P and S in the two directions, one linearly polarized light P from the λ / 2 phase difference portion 29 in the plurality of regions of the phase difference element 28 is applied to each lens 32 of the lens array 31. A first light which is condensed by a portion corresponding to the λ / 2 phase difference portion 29 and is inclined in a direction opposite to the λ / 2 phase difference portion 29 side with respect to the normal direction of the emission surface 10 of the light guide plate 8. The other linearly polarized light S from the non-phase-difference portions 30 of the plurality of regions of the phase-difference element 28 corresponds to the non-phase-difference portions 30 of the lenses 32 of the lens array 31. And is emitted in a second emission direction inclined in a direction opposite to the non-phase difference portion 30 side with respect to the normal direction of the emission surface 10 of the light guide plate 8.

  As shown in FIG. 5, when the second light emitter 25 of the surface light source 7 is turned on, the light from the second light emitter 25 is transmitted by the second linearly polarizing element 27. A linearly polarized light P parallel to the axis 27 a is incident on the light guide plate 8 from the other incident end surface 9 b, and the groove surface on the other incident end surface 9 b side of each elongated groove 12 of the reflective surface 11 of the light guide plate 8. And is emitted from the exit surface 10 of the light guide plate 8 in a direction near the normal line of the exit surface 10.

The linearly polarized light P emitted from the emission surface 10 of the light guide plate 8 is incident on the phase difference element 28, and is incident on a λ / 2 phase difference portion 29 in a plurality of regions of the phase difference element 28. and light is, the lambda / 2 phase difference portion 29 having a slow axis 29a in the angular direction of 4 5 ° with respect to the polarization plane, the plane of polarized light by the lambda / 2 phase difference unit 29 90 ° is rotated transmitted, enters the second of the lens array 31 becomes straight interlinking linearly polarized light S with respect to linearly polarized light P passes through the linearly polarizing element 27 is incident on the light guide plate 8.

Of the light emitted from the exit surface 10 of the light guide plate 8 and incident on the phase difference element 28, the light incident on the non-phase difference portions 30 of the plurality of regions of the phase difference element 28 is The light is transmitted through the phase difference portion 30 without changing the polarization state, and is incident on the lens array 31 with the linearly polarized light P transmitted through the second linearly polarizing element 27 and incident on the light guide plate 8.

  Of the linearly polarized light P and S in the two directions, one linearly polarized light P from the non-phase difference portion 30 in the plurality of regions of the phase difference element 28 is the non-linearity of each lens 32 of the lens array 31. The light is collected by a portion corresponding to the phase difference portion 30 and emitted in a second emission direction inclined in a direction opposite to the non-phase difference portion 30 side with respect to the normal direction of the emission surface 10 of the light guide plate 8. The other linearly polarized light S from the λ / 2 phase difference portion 29 of the plurality of regions of the phase difference element 28 is collected by the portion corresponding to the λ / 2 phase difference portion 29 of each lens 32 of the lens array 31. The light is emitted and emitted in a first emission direction inclined in a direction opposite to the λ / 2 phase difference portion 29 side with respect to the normal direction of the emission surface 10 of the light guide plate 8.

  FIG. 6 is an intensity distribution diagram of emitted light of the linearly polarized light P and S in the two directions when the first light emitter 24 from the surface light source 7 is turned on, and FIG. 7 is a second light emission of the surface light source 7. FIG. 8 is an intensity distribution diagram of the emitted light of the linearly polarized light P and S in the two directions when the body 25 is turned on. In FIGS. 6 and 7, the positive angle is the normal line of the exit surface 10 of the light guide plate 8. The inclination angle of the first emission direction and the negative angle with respect to the direction (0 °) are the inclination angle of the second emission direction with respect to the normal direction (0 °).

Thus, the surface light source 7, the lighting of the first light emitter 24, one of the linearly polarized light P of the straight interlinks two directions, with respect to the normal direction of the emission surface 10 of the light guide plate 8 In the direction of the angle range in which the peak of the outgoing light intensity exists in the first outgoing direction inclined in one direction, the other linearly polarized light S is applied to the normal direction of the outgoing face 10 of the light guide plate 8. When the second luminous body 25 is turned on, the one linearly polarized light P is emitted in the direction of the angle range where the peak of the emitted light intensity exists in the second emission direction inclined in the direction opposite to the direction of Is emitted in the direction of the angle range where the peak of the emitted light intensity exists in the second emission direction, and the other linearly polarized light S is emitted in the direction of the angle range where the peak of the emitted light intensity exists in the first emission direction. To do.

  Therefore, the surface light source 7 is arranged on the opposite side to the observation side of the liquid crystal display panel 1 in which the polarizing plates 5 and 6 are arranged on the observation side and the opposite side, respectively. The left-eye image data and the right-eye image data for displaying a three-dimensional image are alternately written in the pixels, and one of the light emitters 24 of the surface light source 7 is synchronized with the writing of the left-eye image data. Alternatively, it is possible to obtain a liquid crystal display device that displays a three-dimensional image by turning on 25 and turning on the other light emitter 25 or 24 of the surface light source 7 in synchronization with the writing of the image data for the left eye.

  In the liquid crystal display device shown in FIGS. 1 and 2, the surface light source 7 is arranged on the opposite side of the liquid crystal display panel 1 from the observation side. Opposite to the liquid crystal display panel 1, and the normal direction of the light exit surface 10 of the light guide plate 8 is made to coincide with the normal direction of the liquid crystal display panel 1, and one of the first and second light emission directions is The liquid crystal display panel 1 is directed in a direction inclined to the left eye direction of the display observer with respect to the normal direction of the liquid crystal display panel 1, and the other emission direction is directed to the right eye direction of the observer with respect to the normal direction of the liquid crystal display panel 1. It is arranged in a tilted direction.

  Therefore, the light guide plate 8 of the surface light source 7 emits light having directivity in which the peak of the emitted light intensity exists in the normal direction of the liquid crystal display panel 1 from the emission surface 10, and the surface light source 7. The lens array 31 in the normal direction of the liquid crystal display panel 1 uses one of the light transmitted through the λ / 2 phase difference portion 29 and the light transmitted through the non-phase difference portion 30 of the plurality of regions of the phase difference element 28. With respect to the display observer's left eye direction in the direction of the angle range in which the peak of the emitted light intensity exists, and the other light is emitted in the observer's right eye direction with respect to the normal direction The light is emitted in the direction of the angle range in which the peak exists.

Furthermore, the direction of the transmission axes 26a and 27a of the first and second linearly polarizing elements 26 and 27 of the surface light source 7 depends on the direction of the transmission axis 6a of the opposite polarizing plate 6 of the liquid crystal display panel 1. by one of the lighting of the first and second light emitter 24, a transmission axis 6a and the flat line linearly polarized light of the opposite polarization plate 6 of the liquid crystal display panel 1 on the left-eye direction, the opposite polarization emits a transmission axis 6a and straight interlinking linear polarization plate 6 in the right eye direction and the lighting of the other light emitters, the left-eye direction a transmission axis 6a and straight interlinked linearly polarized light of the opposite polarization plate 6 to, and is set a transmission axis 6a and the flat line linearly polarized light of the opposite polarization plate 6 so as to emit the right eye direction.

  The liquid crystal display panel 1 and the driving means 33 of the surface light source 7 alternately perform left eye image data and right eye image data for displaying a three-dimensional image on a plurality of pixels of the liquid crystal display panel 1. The one light emitter 24 or 25 of the surface light source 7 is turned on in synchronization with the writing of the left eye image data, and the other light source 24 of the surface light source 7 is synchronized with the writing of the left eye image data. It consists of a drive circuit that turns on the light emitter 25 or 24.

In the liquid crystal display device of this embodiment, as shown in FIG. 1, the transmission axis 6a of the opposite polarizing plate 6 of the liquid crystal display panel 1 is parallel to the horizontal direction of the screen, and the first and first of the surface light source 7 are arranged. As described above, the transmission axes 26a and 27a of the two linearly polarizing elements 26 and 27, the slow axes 29a of the plurality of λ / 2 phase difference portions 29 of the phase difference element 28, and the length directions of the lenses 32 of the lens array 31 are as described above. since the, the surface light source 7 is set to, the by turning on the first light emitter 24, the transmission axis 6a and the flat line linearly polarized light P and the left-eye direction opposite polarizing plate 6 of the liquid crystal display panel 1 to the transmission axis 6a and straight interlinked linearly polarized light S of the opposite side polarizing plate 6 is emitted to the right eye direction, by turning on the second light emitter 25, the transmission axis 6a and straight in the opposite side polarizer 6 The crossed linearly polarized light S is transmitted through the opposite polarizing plate 6 in the left eye direction. The 6a and flat rows linearly polarized light P so as to emit the right eye direction, the surface light source to the driving unit 33, in synchronization with the writing of the left-eye image data to a plurality of pixels of the liquid crystal display panel 1 The first light emitter 24 is turned on, and the second light emitter 25 of the surface light source 7 is turned on in synchronization with the writing of the image data for the left eye.

In this liquid crystal display device, the surface light source 7 having the above configuration is arranged on the opposite side of the liquid crystal display panel 1 from the observation side, the lens array 31 is opposed to the liquid crystal display panel 1, and the first emission direction is set. The second emission direction is inclined in the right eye direction of the observer with respect to the normal direction, in a direction inclined in the left eye direction of the display observer with respect to the normal direction of the liquid crystal display panel 1 in a direction, said first transmission shaft 6a and the flat line linearly polarized light P on the opposite side polarizing plate 6 of the by lighting of the light emitter 24 liquid crystal display panel 1 on the left-eye direction, said opposite-side polarizer 6 of the transmission axis 6a and straight interlinked linearly polarized light S emitted in the right eye direction, the second of the left transmission axis 6a and straight interlinked linearly polarized light S of the opposite side polarizing plate 6 by turning on the light emitter 25 the eye direction, the transmission axes 6a and the flat line linear polarization P of the opposite side polarizer 6 The left eye image data and the right eye image data are alternately written in the plurality of pixels of the liquid crystal display panel 1 by the driving unit 33, and the left eye image data is stored in the left eye image data. The first light emitter 24 of the surface light source 7 is turned on in synchronization with the writing, and the second light emitter 25 of the surface light source 7 is turned on in synchronization with the writing of the image data for the left eye. Therefore, it is possible to display a high-quality three-dimensional image with high resolution of both the left-eye image and the right-eye image.

  FIG. 3 is an outgoing ray diagram when displaying an image for the left eye and an image for the right eye of the liquid crystal display device, and (a) is an outgoing ray when displaying an image for the left eye, ) Shows the emitted light when the right-eye image is displayed.

  The liquid crystal display device writes image data for the left eye to a plurality of pixels of the liquid crystal display panel 1, and lights the first light emitter 24 of the surface light source 7 in synchronization with the writing of the image data for the left eye. The left eye image is displayed, the right eye image data is written in the plurality of pixels of the liquid crystal display panel 1, and the second light emitter 25 of the surface light source 7 is synchronized with the writing of the right eye image data. Is turned on to display the right-eye image.

That is, when is lit first light emitter 24 of the surface light source 7, as shown in FIG. 4, from the surface light source 7, the transmission axis 6a and the flat row on the opposite side polarizing plate 6 of the liquid crystal display panel 1 to a linearly polarized light P is the left-eye direction, the transmission axis 6a and straight interlinked linearly polarized light S on the opposite side polarizing plate 6 is emitted to the right eye direction, these linear polarization P, of S, the left-eye The linearly polarized light P emitted in the direction enters the liquid crystal display panel 1 through the opposite polarizing plate 6 and is emitted in the right eye direction as indicated by the arrow in FIG. S is absorbed by the opposite polarizing plate 6 of the liquid crystal display panel 1.

  Therefore, when the left-eye image data is written to the plurality of pixels of the liquid crystal display panel 1 and the first light emitter 24 of the surface light source 7 is turned on in synchronization with the writing of the left-eye image data, Image light corresponding to the left-eye image data is emitted from the liquid crystal display panel 1 toward the left eye of the display observer, and the left-eye image is observed by the left eye of the observer.

Further, when the turns on the second light emitter 25 of the surface light source 7, as shown in FIG. 5, from the surface light source 7, the transmission axis 6a and the flat row on the opposite side polarizing plate 6 of the liquid crystal display panel 1 a linearly polarized light P is the right-eye direction, the transmission axis 6a and straight interlinked linearly polarized light S on the opposite side polarizing plate 6 is emitted to the left-eye direction, these linear polarization P, of S, the right eye The linearly polarized light P emitted in the direction enters the liquid crystal display panel 1 through the opposite polarizing plate 6 and is emitted in the left eye direction as indicated by the arrow in FIG. S is absorbed by the opposite polarizing plate 6 of the liquid crystal display panel 1.

  Therefore, when the right eye image data is written to the plurality of pixels of the liquid crystal display panel 1 and the second light emitter 25 of the surface light source 7 is turned on in synchronization with the writing of the right eye image data, Image light corresponding to the right-eye image data is emitted from the liquid crystal display panel 1 toward the right eye of the display observer, and the right-eye image is observed by the right and left eyes of the observer.

  Thus, the liquid crystal display device writes the left eye image data to the plurality of pixels of the liquid crystal display panel 1, and the first light emitter of the surface light source 7 in synchronization with the writing of the left eye image data. 24 is turned on to display the image for the left eye on the liquid crystal display panel 1, the image data for the left eye is written in a plurality of pixels of the liquid crystal display panel 1, and the image data for the left eye is synchronized with the writing of the image data for the left eye The second light emitter 25 of the surface light source 7 is turned on to display a right eye image on the liquid crystal display panel 1, and the liquid crystal display device displays the left eye image and the right eye image, respectively. Since all the pixels of the liquid crystal display panel 1 can be used for display, it is possible to display a high-quality three-dimensional image with high resolution for both the left-eye image and the right-eye image.

  Moreover, the liquid crystal display device emits light having directivity in which the peak of the emitted light intensity exists in the normal direction of the liquid crystal display panel 1 from the emission surface 10 of the light guide plate 8 of the surface light source 7. By the lens array 31 of the surface light source 7, one of the light transmitted through the λ / 2 phase difference portion 29 and the light transmitted through the non-phase difference portion 30 of the plurality of regions of the phase difference element 28 is changed to the liquid crystal display panel 1. The direction of the left eye of the display observer is emitted in the direction of the angle range in which the peak of the emitted light exists in the direction of the left eye of the display observer, and the other light is emitted in the direction of the right eye of the observer with respect to the normal direction. Since the light is emitted in the direction of the angle range where the peak of the emitted light intensity exists, a higher-quality three-dimensional image with high brightness and contrast of both the left-eye image and the right-eye image is displayed. can do.

  In the liquid crystal display device, the liquid crystal display panel 1 is not provided with a color filter, and the first and second light emitters 24 and 25 of the surface light source 7 are respectively provided with a red LED, a green LED, and a blue LED. Even in a field sequential liquid crystal display device that selectively emits light of three colors of red, green, and blue from these light emitters 24, 25, the liquid crystal display panel 1 has a plurality of pixels. Correspondingly, a liquid crystal display device provided with three color filters of red, green, and blue and emitting white light from the first and second light emitters 24 and 25 of the surface light source 7 may be used.

  In the case of the field-sequential liquid crystal display device, the driving unit 33 has three unit colors of red, green, and blue for each of six fields obtained by dividing one frame for displaying one three-dimensional color image into six. One of the left-eye image data and the right-eye image data is selected in an arbitrary order and sequentially written in each pixel of the liquid crystal display panel 1, and the left of each unit color of red, green, and blue In synchronization with the writing of the image data for the eye, the LED of the color of the writing image data among the red, green and blue LEDs of the first light emitter 24 of the surface light source 7 is turned on, and red, green The color of the writing image data of the red, green and blue LEDs of the second light emitter 25 of the surface light source 7 in synchronization with the writing of the right eye image data of each unit color of blue. The LED is turned on.

  Further, in the case of a liquid crystal display device in which the liquid crystal display panel 1 is provided with three color filters of red, green, and blue, the driving means 33 has one frame for displaying one three-dimensional color image. In one of the two divided fields, image data for the left eye composed of color data of three colors of red, green, and blue is written in each pixel of the liquid crystal display panel 1, and in the other of the two fields, red, The right-eye image data composed of three color data of green and blue is written to each pixel of the liquid crystal display panel 1, and the first light emitter of the surface light source 7 is synchronized with the writing of the left-eye image data. 24 is turned on, and the second light emitter 25 of the surface light source 7 is turned on in synchronization with the writing of the right-eye image data.

  In addition, the light guide means of the surface light source 7 is not limited to the light guide plate 8, an incident portion for entering light, an emission surface for emitting light incident from the incident portion, and the light incident from the incident portion are emitted. Any other configuration may be used as long as it has a reflecting surface that reflects toward the surface and guides the light incident from the incident portion and emits the light from the emitting surface.

  FIG. 8 is a plan view of a liquid crystal display device showing a modification of the first embodiment. In this modification, the surface light source 7 is provided with a light guide means 13 comprising a prism sheet 14 and a reflector 16. It is a configuration.

  This light guide means 13 is opposed to a prism forming surface of a prism sheet 14 in which a plurality of elongated prisms 15 are formed in parallel on one surface with a space between the reflecting plate 16 and the prism sheet 14. The incident portions 17a and 17b for allowing light to enter are formed by two end portions in a direction orthogonal to the length direction of the elongated prism 15 in the space between the prism sheet 14 and the reflecting plate 16. An exit surface 14a of light incident from the incident portions 17a and 17b is formed by a surface opposite to the prism forming surface of the prism sheet 14, and the incident portion 17a is formed by a surface of the reflecting plate 16 facing the prism sheet 14. , 17b is formed with a reflection surface 16a for reflecting the light incident on the emission surface 14a.

  The light guide means 13 reflects the light incident from the incident portions 17a and 17b by the reflecting surface 16a of the reflecting plate 16 to the prism sheet 14 as indicated by arrows and broken lines in the figure. The incident light is refracted by the plurality of elongated prisms 15 of the prism sheet 14 and is emitted from the emission surface 14a of the prism sheet 14 in the normal direction of the emission surface 14a.

  And the surface light source 7 of this embodiment arrange | positions the 1st and 2nd light-emitting bodies 24 and 25 facing the incident parts 17a and 17b of the said two edge parts of the said light guide means 13, respectively, First and second linearly polarizing elements 26 and 27 each having a transmission axis in one direction are arranged on the emission side of the light emitters 24 and 25, respectively, and are opposed to the emission surface 14a of the light guide means 13. A phase difference element 28 is arranged, and the lens array 31 is provided on the opposite side of the phase difference element 28 from the side facing the light guide means 13.

  FIG. 9 is a perspective view of the light guide means of the surface light source, the first and second light emitters, and the first and second linearly polarizing elements showing another modification of the first embodiment, and this modification. The light guide means forms an incident portion (hereinafter referred to as an incident end face) 19 for allowing light to enter one end face of the transparent plate, and enters the one of the two plate faces of the transparent plate from the incident end face 19. A light guide plate 18 in which a flat emission surface 20 for emitting light is formed, and a reflection surface 21 for reflecting light incident from the incident portion 19 toward the emission surface 20 is formed on the other plate surface of the transparent plate. It is what.

  The reflection surface 21 of the light guide plate 18 is composed of an inclined surface that is inclined stepwise in a direction approaching the exit surface 20 from one end side where the incident end surface 19 is formed toward the other end side. Each sloping stepped surface forms an elongated reflecting portion 22 that internally reflects light incident from the incident end surface 19 in a direction near the normal line of the exit surface 20.

In the surface light source of this embodiment, a plurality of pieces (two in the figure) each having a shape in which the incident end face 19 is divided into an even number in the length direction are opposed to the incident end face 19 at one end of the light guide plate 18. The first and second light emitters 24, 25 are alternately arranged in the length direction of the incident end face 19, and the first and second linearly polarizing elements 26, 25 are respectively disposed on the emission side of the light emitters 24, 25. 27, the respective transmission axes are arranged so straight interlinked, further between the linearly polarizing element 26, 27 and the incident end face 19 of the light guide plate 18, from the first and second light emitters 24 and 25 A diffusing plate 23 for making the intensity distribution of the linearly polarized light that is emitted and transmitted through the first and second linearly polarizing elements 26 and 27 uniform and incident on the light guide plate 18 is arranged in FIG. Although omitted, it faces the light exit surface 20 of the light guide plate 18. Allowed the retardation element 28 is arranged, the said lens array 31 on the opposite side to the opposite side to the light guide plate 18 of the retardation element 28 is provided.

Since the surface light sources of the respective modifications shown in FIGS. 8 and 9 are configured as described above, the first and second surface light sources are similar to the surface light source 7 of the first embodiment described above. by one of the lighting of the light emitters 24 and 25, the first emission direction inclined in one direction one straight interlinks two directions of linear polarization with respect to the normal direction of the emission surface 20 of the light guide plate 18 The other linearly polarized light is emitted in a second emission direction inclined in a direction opposite to the one direction with respect to the normal direction of the emission surface 20 of the light guide plate 18, and the other light emitter is turned on to One linearly polarized light can be emitted in the second emission direction, and the other linearly polarized light can be emitted in the first emission direction.

  Therefore, by arranging this surface light source on the side opposite to the viewing side of the liquid crystal display panel 1 to constitute a liquid crystal display device, the luminance and contrast of both the left eye image and the right eye image are high. A quality 3D image can be displayed.

(Second Embodiment)
FIG. 10 is a plan view of a liquid crystal display device showing a second embodiment of the present invention. Incidentally, omitted in this embodiment, the same reference numerals assigned to the figures in which corresponding to the liquid crystal display device of the first embodiment described above, the description of the same thing.

The liquid crystal display device of this embodiment is arranged on the opposite side of the liquid crystal display panel 1 and the observation side of the liquid crystal display panel 1, and is polarized on the opposite side of the liquid crystal display panel 1 toward the liquid crystal display panel 1. selectively irradiating the second illumination light comprising transmission axis 6a and the flat line linearly polarized light of the first illumination light comprising transmission axis 6a and straight interlinking linear polarization plate 6 the opposite side polarizer 6 a light source 34, between the light source 34 and the liquid crystal display panel 1, and the liquid crystal display wherein in close proximity or surface contact to the panel 1 the liquid crystal display panel 1 and placed on a flat row phase difference element 28, the liquid crystal It includes a drive means 43 of the display panel 1 and the light source 34.

The light source 34 is a surface light source that irradiates the first illumination light and the second illumination light with uniform intensity distribution toward the liquid crystal display panel 1, and corresponds to, for example, the screen area 1 a of the liquid crystal display panel 1. The incident end faces 36a and 36b are formed on the two opposite end faces of the transparent plate such as an acrylic resin plate having a rectangular planar shape, and the incident portion is formed on one of the two plate faces. An exit surface 37 that emits light incident from 36a and 36b is formed, and a reflective surface 38 that internally reflects the light incident from the entrance portions 36a and 36b toward the exit surface 37 is formed on the other plate surface. The first light guide plate 35 and the first and second light emitters 39 and 40 which are arranged to face the two incident end faces 36a and 36b of the light guide plate 35 and are selectively lit, are transmitted in one direction. Has axis , Respectively the exit side of the first and second light emitters 39 and 40, the first and second linear polarizing elements 41 and 42 each of the transmission shaft arranged by straight interlinked, and is composed of .

  The first and second light emitters 39 and 40 are each composed of a light-emitting element array in which a plurality of solid-state light-emitting elements such as LEDs are arranged. The other incident end face 36b is arranged so as to face each other.

The first and second linearly polarizing elements 41 and 42 are formed in a shape corresponding to the incident end faces 36a and 36b of the light guide plate 35, and one of the incident end faces 36a of the light guide plate 35 and the outside thereof. Linearly polarized light elements between the first light emitter 39 disposed on the light guide plate 35 and between the other light incident end surface 36b of the light guide plate 35 and the second light emitter 40 disposed on the outside thereof. the transmission axis of 41 and 42 are arranged with a straight interlinked.

In this embodiment, the first linear polarizing element 41, and arranged on the the transmission axis width direction of the light guide plate 35 (the entrance end face 36a, the length direction of 36b) and the flat line, the second straight line the polarizing element 42, the thickness direction of the light guide plate 35 and the transmission axis are arranged in the spur line (incident end face 36a, a height direction 36b).

The light source 34 selectively turns on the first light emitter 39 and the second light emitter 40 by the driving means 43, and the first linearly polarizing element is turned on by turning on the first light emitter 39. First illumination light composed of linearly polarized light parallel to the transmission axis of 41 is emitted from the exit surface 37 of the light guide plate 35, and is transmitted through the second linearly polarized light element 42 by turning on the second light emitter 40. linearly polarized light parallel to the axis, emits i.e. the second illumination light comprising straight interlinked linearly polarized light with respect to the first illuminating light from the exit surface 37 of the light guide plate 35.

The light source 34 is provided on the opposite side of the liquid crystal display panel 1 from the observation side, and the polarization plane of the first illumination light out of the first and second illumination lights emitted from the emission surface 37 of the light guide plate 35. the liquid crystal display panel opposite to the transmission axis 6a and was directly interlinked polarizing plate 6 of 1, and the polarization plane of the second illumination light are arranged in the transmission axis 6a and the flat line of said opposite side polarizing plate 6.

The phase difference element 28 corresponds to every other first area among a plurality of areas obtained by dividing the screen area 1a of the liquid crystal display panel 1 into a predetermined number of pixels in the horizontal direction of the screen. Thus, a plurality of λ / 2 phase difference portions 29 that give a phase difference of ½ wavelength between the ordinary light and the extraordinary light of the transmitted light are formed to correspond to the other second regions, respectively. Te, position is obtained by forming a plurality of non-phase difference unit 30 with no phase difference, a plurality of lambda / 2 phase difference unit 29, a width direction of the light guide plate 35 (the entrance end face 36a, 36b in the length direction) It has the slow axis in 4 5 ° inclined direction with respect.

That is, the slow axes of the plurality of λ / 2 phase difference portions 29 are transmitted from the first light emitter 39 of the light source 34 through the first linearly polarizing element 41 and incident on the light guide plate 35. The first illumination light composed of linearly polarized light that exits from the exit surface 37 of the light guide plate 35 and the second linearly polarized light element 42 from the second light emitter 40 are incident on the light guide plate 35, and the second plane of polarization of both the illumination light consisting of linear polarization emitted from the emitting surface 37 of the light guide plate 35 with respect to intersect at an angle of 4 5 °.

  In this embodiment, the screen area 1a of the liquid crystal display panel 1 is divided for each pixel column in the horizontal direction of the screen, and a plurality of λ / 2 phase difference portions 29 and a non-phase difference portion 30 of the phase difference element 28 are obtained. In the up-down direction of the screen, corresponding to every other first area and every other second area of each area divided for each pixel column of the liquid crystal display panel 1 It is formed in a vertical stripe shape along.

In addition, the driving unit 43 is configured such that, during the first display period, the liquid crystal display panel 1 as viewed from the alternate first region, that is, the display viewing side among the plurality of pixels of the liquid crystal display panel 1. Every other pixel column facing a plurality of λ / 2 phase difference portions 29 of the phase difference element 28 on a line inclined in the left direction (the left eye direction of the display observer M) with respect to the normal direction of Each pixel in the numbered pixel row and every other second region, that is, the normal direction of the liquid crystal display panel 1 when viewed from the viewing side of the display (the right eye of the display observer M) A three-dimensional image is applied to every other pixel column facing the plurality of λ / 2 phase difference portions 29 of the phase difference element 28, for example, each pixel in an even-numbered pixel column on a line inclined in the direction). writing alternately the image data and the right-eye image data for the left eye to be displayed, the one location Left-eye image data and right-eye image for displaying a three-dimensional image on each pixel corresponding to each of the first regions and each other pixel corresponding to every other second region Data is written alternately, the first illumination light is irradiated from the light source 34 in synchronization with the writing of the image data, and the odd-numbered pixels are displayed in the second display period following the first display period. The right-eye image data and the left-eye image data are alternately written to each pixel of the column and each pixel of the even-numbered pixel column, and the first light source 34 synchronizes with the writing of the image data. It consists of a drive circuit that irradiates two illumination lights.

  The liquid crystal display device may be a field sequential liquid crystal display device or a liquid crystal display device in which the liquid crystal display panel 1 is provided with three color filters of red, green, and blue. In the case of a field sequential liquid crystal display device, , The driving means 43 is set to the left of one unit color among the three unit colors of red, green and blue for every six fields obtained by dividing one frame for displaying one three-dimensional color image into six fields. The image data for the eye and the image data for the right eye are written in each pixel of the odd-numbered and even-numbered pixel columns and each pixel of the other pixel column, and these red, green, and blue unit colors In synchronization with the writing of the left-eye image data and the right-eye image data, the light source 34 emits the first or second illumination light of the color of the written image data among the three colors of red, green, and blue. To be configured.

  Further, in the case of a liquid crystal display device in which the liquid crystal display panel 1 is provided with three color filters of red, green, and blue, the driving means 43 has one frame for displaying one three-dimensional color image. For each of the two divided fields, the left-eye image data and the right-eye image data composed of color data of three colors of red, green, and blue are converted into each pixel in one of the odd-numbered and even-numbered pixel columns. In addition, the first white light or the second white illumination light is emitted from the light source 34 in synchronization with each pixel of the other pixel column.

  11 and 12 are diagrams showing the display principle of the liquid crystal display device according to the second embodiment. FIG. 11 shows the left-eye image and the right-eye image when the first illumination light is irradiated from the light source 34. FIG. 12 shows the display principle of the image for the left eye and the image for the right eye when the second illumination light is irradiated from the light source 34.

  The liquid crystal display device writes left-eye image data to each pixel of the odd-numbered pixel row among the plurality of pixels of the liquid crystal display panel 1, and the right-eye image is written to each pixel of the even-numbered pixel row. Data is written, and the first illumination light is emitted from the light source 34 in synchronization with the writing of the image data, and the first left-eye image for every other row and the first right-eye for every other row. An image is displayed, and subsequently, the left-eye image data is written to each pixel of the even-numbered pixel row, and the right-eye image data is written to each pixel of the odd-numbered pixel row. The second illumination light is emitted from the light source 34 in synchronization with the writing, and the second left-eye image and the first right-eye image between the first left-eye image columns. The second right-eye image is displayed, and these four images are used to display a high-definition three-dimensional image. To display.

That is, the light source 34, the time obtained by irradiating the side opposite the first illumination light and the transmission axis 6a made of straight interlinked linearly polarized light of the polarizing plate 6 of the liquid crystal display panel 1, the first illumination light Among them, the light transmitted through the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 and rotated by 90 ° on the polarization plane is incident on the liquid crystal display panel 1 through the opposite side polarizing plate 6. The light transmitted through the plurality of non-phase-difference portions 30 of the retardation element 28 without changing the polarization state is absorbed by the opposite polarizing plate 6 of the liquid crystal display panel 1.

  Therefore, the left-eye image data is written to each pixel of the odd-numbered pixel column of the liquid crystal display panel 1, the right-eye image data is written to each pixel of the even-numbered pixel column, and these image data are written. The left-eye image data is written out of the light transmitted through the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 when the first illumination light is irradiated from the light source 34 in synchronization. The light incident on each pixel (pixels filled in FIG. 11) Da in the odd-numbered pixel row is emitted toward the left eye of the observer M as the left-eye image L1 displayed on the pixel, Light that has entered each pixel (white pixel in FIG. 11) Db of the even-numbered pixel row into which the right-eye image data has been written is displayed as the right-eye image R1 displayed by the observer M. The light is emitted toward the right eye. Therefore, the left eye of the odd-numbered pixel column can be observed by the observer's left eye, and the right-eye image of the even-numbered pixel column can be observed by the right eye.

Further, from the light source 34, when the were irradiated with the transmission axis 6a and composed of a flat line linearly polarized light the second illumination light on the opposite side polarizing plate 6 of the liquid crystal display panel 1, the second illumination light Among them, the light transmitted through the plurality of non-phase-difference portions 30 of the phase difference element 28 without changing the polarization state is incident on the liquid crystal display panel 1 through the opposite side polarizing plate 6 and the phase difference. Light that has passed through the plurality of λ / 2 phase difference portions 29 of the element 28 and whose polarization plane has been rotated by 90 ° is absorbed by the opposite polarizing plate 6 of the liquid crystal display panel 1.

  Therefore, the left-eye image data is written to each pixel of the even-numbered pixel column of the liquid crystal display panel 1, the right-eye image data is written to each pixel of the odd-numbered pixel column, and the writing of these image data is performed. The left-eye image data is written out of the light transmitted through the plurality of non-phase-difference portions 30 of the phase-difference element 28 when the second illumination light is irradiated from the light source 34 in synchronization with However, the light incident on each pixel (pixels filled in FIG. 12) Db of the even-numbered pixel row is emitted toward the left eye of the observer M as the left-eye image L2 displayed on the pixel, and Light incident on each pixel (white pixel in FIG. 12) Da of the odd-numbered pixel row in which the image data for the right eye is written is displayed as an image R2 for the right eye displayed on the pixel. The light is emitted toward the right eye. Therefore, it is possible to cause the left eye of the observer to observe the image for the left eye for each even-numbered pixel column, and allow the right eye to observe the image for the right eye for each odd-numbered pixel column.

  FIG. 13 is a schematic view of a display image of the liquid crystal display panel 1 in the liquid crystal display device of the second embodiment. FIG. 13A is a diagram illustrating the irradiation of the first illumination light from the light source 34 as shown in FIG. FIG. 12 shows a left-eye image L1 displayed by the odd-numbered pixel columns and a right-eye image R1 displayed by the even-numbered pixel columns when the light source is turned on, as shown in FIG. 34 shows a left-eye image L2 displayed by the even-numbered pixel row and a right-eye image R2 displayed by the odd-numbered pixel row when the second illumination light is irradiated from 34.

That is, in the liquid crystal display device, when the first illumination light is irradiated from the light source 34, the plurality of non-phase difference portions 30 of the phase difference element 28 act as a parallax barrier, and the odd-numbered pixels The left eye image L1 displayed by the columns is observed by the left eye of the display observer M, the right eye image R1 displayed by the even-numbered pixel columns is observed by the right eye of the display observer M, and When the second illumination light is irradiated from the light source 34, the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 act as a parallax barrier, and are displayed by the even-numbered pixel columns. The image L2 for eyes is observed by the left eye of the display observer M, and the image R2 for right eyes displayed by the odd-numbered pixel rows is observed by the right eye of the display observer M.

  Therefore, the left-eye image L1 displayed by the odd-numbered pixel columns and the left-eye image L2 displayed by the even-numbered pixel columns have a high-resolution left-eye image (A in the display example of FIG. 13). Character image) is observed by the left eye of the display observer M, and the resolution is determined by the right-eye image R1 displayed by the even-numbered pixel columns and the right-eye image R2 displayed by the odd-numbered pixel columns. The right eye image (Z character image in the display example of FIG. 13) can be observed by the right eye of the observer M.

  In this embodiment, a plurality of λ / 2 phase difference portions 29 and non-phase difference portions 30 of the phase difference element 28 are placed in each of the regions divided for each pixel column of the liquid crystal display panel 1. The first area of the liquid crystal display panel and the other second areas are formed so as to correspond to each other, but the screen area 1a of the liquid crystal display panel 1 is divided into a plurality of pixel columns in the horizontal direction of the screen, for example, It is divided into about 2 to 10 pixel columns, and the plurality of λ / 2 phase difference portions 29 and non-phase difference portions 30 of the phase difference element 28 are divided into the plurality of pixel columns of the liquid crystal display panel 1. Each other region may be formed so as to correspond to every other first region and every other second region.

Thus, in the liquid crystal display device of this embodiment, the transmission axis of the polarizing plate 6 on the opposite side of the liquid crystal display panel 1 is directed toward the liquid crystal display panel 1 on the side opposite to the observation side of the liquid crystal display panel 1. the light source 34 for selectively irradiating the second illumination light of a first illumination light and the transmission axis 6a and the flat line linearly polarized light of the opposite polarization plate 6 consisting of 6a and straight interlinked linearly polarized light is arranged Between the light source 34 and the liquid crystal display panel 1, every other one of a plurality of areas obtained by dividing the screen area 1a of the liquid crystal display panel 1 into a predetermined number of pixels in the horizontal direction of the screen. A plurality of λ / 2 phase difference portions 29 are formed corresponding to the first regions, and a plurality of non-phase difference portions 30 are formed corresponding to the other second regions, respectively. An element 28 is arranged, and the liquid crystal display panel 1 is driven by the driving means 43. Among the plurality of pixels, the left-eye image data and the right-eye image are assigned to each pixel corresponding to the alternate first region and each other pixel corresponding to the alternate second region. The image data is written alternately, the first illumination light is irradiated from the light source 34 in synchronization with the writing of the image data, the pixels corresponding to the alternate first regions, and the other The right-eye image data and the left-eye image data are alternately written in each pixel corresponding to every other second area, and the second light source 34 synchronizes with the writing of these image data. Therefore, it is possible to display a high-quality three-dimensional image with high resolution of both the left-eye image and the right-eye image.

Further, in the liquid crystal display device of this embodiment, the driving means 43 causes each pixel corresponding to each other first region of the liquid crystal display panel 1 during the first display period, and the other The left-eye image data and the right-eye image data are alternately written to each pixel corresponding to every other second region, and in the second display period following the first display period, The right-eye image data and the left-eye image data are alternately written in each pixel corresponding to the first area and each pixel corresponding to the second area of the liquid crystal display panel 1, respectively. because you are, without flickering, it is possible to display a higher quality of the three-dimensional image.

(Third embodiment)
14 and 15 are a perspective view and a plan view of a liquid crystal display device according to a third embodiment of the present invention. In this embodiment, components corresponding to the liquid crystal display device of the first embodiment described above are denoted by the same reference numerals, and the description of the same components is omitted.

The liquid crystal display device of this embodiment is arranged on the opposite side of the liquid crystal display panel 1 and the observation side of the liquid crystal display panel 1, and is polarized on the opposite side of the liquid crystal display panel 1 toward the liquid crystal display panel 1. It consists transmission axis 6a and straight interlinking linear polarization plate 6 and the liquid crystal display panel 1 of one of the left and right of the display observer M with respect to the normal direction of the direction in emission intensity inclined in the direction of the eye first illumination light a having a directivity peaks are present, the result from the opposite side transmission axis 6a and the flat line linearly polarized light of the polarizing plate 6, and the respect to the normal direction of the liquid crystal display panel 1 A light source 44 that selectively irradiates the second illumination light b having directivity in which a peak of the emitted light intensity exists in a direction inclined to the other eye of the observer M, the light source 44 and the liquid crystal In the vicinity of the liquid crystal display panel 1 or between the display panel 1 and And the liquid crystal display panel 1 and placed on a flat row phase difference element 28 by surface contact, a phase difference element moving means 51 for moving the phase difference element 28 in the vertical direction of the liquid crystal display panel 1 screen, the The liquid crystal display panel 1 and a driving means 52 for the light source 44 are provided.

The light source 44 is a surface light source that irradiates the first illumination light a and the second illumination light b with uniform intensity distribution toward the liquid crystal display panel 1, for example, the screen area 1 a of the liquid crystal display panel 1. First and second light source portions 45a and 45b corresponding to the right half region and the left half region, respectively, and transmission axes 48a and 49a in one direction, and the first and second light source portions. 45a, respectively on the emission side of 45b, the first and second linear polarizing elements 48 and 49, each of the transmission shaft 48a, a 49a disposed so straight interlinked, as viewed from the observation side of the liquid crystal display panel 1 right The first illumination light a emitted from the first light source unit 45a and converted into linearly polarized light parallel to the transmission axis 48a by the first linearly polarizing element 48 is directed to one eye of the display observer M, For example, the light is condensed in the direction of the left eye and the left side as viewed from the observation side. The second illumination light b emitted from the light source unit 45b and converted into the linearly polarized light parallel to the transmission axis 49a by the second linear polarization element 49 is directed to the other eye of the observer M, that is, the right eye. And a circular Fresnel lens 50 that collects light in the direction.

In this embodiment, as shown in FIG. 14, the transmission axis 6a of the opposite polarizing plate 6 of the liquid crystal display panel 1 is made parallel to the horizontal direction of the screen, and the light emitted from the first light source section 45a of the light source 44. a first transmission axis 48a of the linearly polarizing element 48 disposed on the side not directly interlinked with respect to the transmission axis 6a of the opposite side polarizing plate 6 of the liquid crystal display panel 1, was placed on the exit side of the second light source unit 45b the transmission axis 49a of the second linear polarizing element 49 has a transmission axis 6a and the flat line of said opposite side polarizing plate 6. In FIG. 14, reference numeral 5 a denotes the transmission axis of the observation side polarizing plate 5 of the liquid crystal display panel 1.

  Each of the first and second light source portions 45a and 45b is made of a transparent plate such as an acrylic resin plate having a rectangular planar shape corresponding to the right half and left half regions of the screen area 1a of the liquid crystal display panel 1. An incident end surface for allowing light to enter is formed on one end surface thereof, an exit surface for emitting light incident from the incident portion is formed on one of the two plate surfaces, and incident on the other plate surface from the incident portion. The light guide plate 46 is formed with a reflection surface that reflects light toward the emission surface, and the light emitter 47 is disposed to face the incident end surface of the light guide plate 46. The light emitting body 47 is composed of a light emitting element array in which a plurality of solid state light emitting elements such as LEDs are arranged, and is arranged with its emission surface facing the incident end face of the light guide plate 46.

In the light source 44, both the light emitting body 47 of the first light source unit 45 a and the light emitting body 47 of the second light source unit 45 b are turned on by the driving means 52, and the opposite side polarizing plate 6 of the liquid crystal display panel 1 is turned on. the transmission axis becomes 6a and a straight interlinked linearly polarized light, and the directivity the peak of the emission intensity in a direction inclined to the left eye direction of the display observer M with respect to the normal direction of the liquid crystal display panel 1 is present first illumination light a having the consist opposite transmission axis 6a and the flat line linearly polarized light of the polarizing plate 6, and the other eye of the observer M with respect to the normal direction of the liquid crystal display panel 1 The second illuminating light b having directivity in which the peak of the emitted light intensity exists in a direction inclined in the direction of is directed toward the liquid crystal display panel 1 as indicated by an arrow in FIG.

The phase difference element 28 is provided for every other one of a plurality of regions obtained by dividing the screen area 1a of the liquid crystal display panel 1 in a predetermined number of pixels in the vertical direction of the screen, for example, for each pixel. A plurality of λ / 2 phase difference portions 29 that give a phase difference of ½ wavelength between the ordinary light and the extraordinary light of the transmitted light are formed corresponding to each of the first region, and every other second respectively in correspondence to the region, is obtained by forming a plurality of non-phase difference unit 30 with no phase difference, a plurality of lambda / 2 phase difference unit 29 emits the first light source 45a of the light source 44 and with respect to the transmission axis 49a of the second linear polarizing element 49 disposed on the exit side of the transmission axis 48a and the second light source section 45b of the first linear polarizing element 48 disposed on the side 4 5 ° inclined direction Has a slow axis 29a.

  In this embodiment, the screen area 1a of the liquid crystal display panel 1 is divided for each pixel row in the vertical direction of the screen, and a plurality of λ / 2 phase difference portions 29 and non-phase difference portions 30 of the phase difference element 28 are obtained. In the left-right direction of the screen, corresponding to every other first region and every other second region of each region divided for each pixel row of the liquid crystal display panel 1 It is formed in a horizontal stripe shape along the line.

  Although the structure of the phase difference element moving means 51 is not shown, it is composed of, for example, a linear stepping motor, and the phase difference element 28 is changed to λ / 2 according to a timing signal supplied from the drive means 52. The liquid crystal is moved in the vertical direction of the screen by a stroke corresponding to the pitch of the phase difference portion 29 and the non-phase difference portion 30, and the plurality of λ / 2 phase difference portions 29 and the non-phase difference portion 30 of the phase difference element 28 are moved to the liquid crystal. The first region and the second region of the display panel 1 are alternately opposed to each other.

  Further, the driving means 52 causes the λ / 2 phase difference portion 29 of the phase difference element 28 to oppose the every other first region of the liquid crystal display panel 1 by the phase difference element moving means 51, and When the phase difference portion 30 is opposed to the other second region, the three-dimensional image is displayed on each pixel in the first region among the plurality of pixels of the liquid crystal display panel 1. Left eye image data out of left and right eye image data for the right eye image data is written to each pixel in the second region, and the light source 44 is synchronized with the writing of these image data. The first and second illumination lights a and b are irradiated, the λ / 2 phase difference portion 29 of the phase difference element 28 is made to face the second region of the liquid crystal display panel 1, and the phase difference portion 30. When the liquid crystal display panel 1 is opposed to the first region. The right eye image data is written to each pixel in the first area, and the left eye image data is written to each pixel in the second area, and the first light source 44 and the first eye data are synchronized with the writing of the image data. The driving circuit irradiates the second illumination lights a and b.

  Further, the driving means 52 is arranged so that, in the first display period, each pixel in the every other first region and every other pixel in every other second region of the liquid crystal display panel 1 are used. The left-eye image data and the right-eye image data are alternately written, and in the second display period subsequent to the first display period, each pixel in the first region of the liquid crystal display panel 1 and the first The image data for the right eye and the image data for the left eye are alternately written into each pixel in the area 2.

  The phase difference element moving means 51 and the drive means 52 are for moving the phase difference element 28 and for the left eye to each pixel of the odd numbered pixel row and each pixel of the even numbered pixel row of the liquid crystal display panel 1. Writing of image data and right-eye image data and writing of left-eye image data and right-eye image data to each pixel of the odd-numbered pixel row and each pixel of the even-numbered pixel row are alternately performed. The phase difference element moving unit 51 causes the λ / 2 phase difference portion 29 of the phase difference element 28 to oppose the odd-numbered pixel rows of the liquid crystal display panel 1, and the phase difference portion 30 is Write the left-eye image data and the right-eye image data to each pixel of the odd-numbered pixel row and each pixel of the even-numbered pixel row of the liquid crystal display panel 1 in a state of facing the even-numbered pixel row, Display for irradiating the first and second illumination lights a and b from the light source 44 The λ / 2 phase difference portion 29 of the phase difference element 28 is opposed to the even-numbered pixel row, and the non-phase difference portion 30 is opposed to the odd-numbered pixel row. The left-eye image data and the right-eye image data are written to each pixel in the numbered pixel row and each pixel in the odd numbered pixel row, and the first and second illumination lights a and b are emitted from the light source 44. Maintain during display time.

  The liquid crystal display device may be a field sequential liquid crystal display device or a liquid crystal display device in which the liquid crystal display panel 1 is provided with three color filters of red, green, and blue. In the case of a field sequential liquid crystal display device, The phase difference element moving means 51 and the drive means 52 move the phase difference element 28 in one of the upper and lower directions every six fields obtained by dividing one frame for displaying one three-dimensional color image into six fields. The left-eye image data and the right-eye image data of one unit color among the three unit colors of green and blue are converted into each pixel of the odd-numbered and even-numbered pixel rows and the other Write to each pixel in the pixel row, and synchronize with the writing of the left-eye and right-eye image data of each unit color of red, green, and blue from the light source 44 to output red, green, and blue 3 Writing out of color The first and second illumination light a color image data, the b configured to emit.

  Further, in the case of a liquid crystal display device in which the liquid crystal display panel 1 is provided with three color filters of red, green, and blue, the phase difference element moving means 51 and the driving means 52 are used to display one three-dimensional color image. For each of two fields obtained by dividing one frame for display into two fields, the phase difference element 28 is moved in either the upper or lower direction, and image data for the left eye consisting of three color data of red, green, and blue, The right-eye image data is written to each pixel in one of the odd-numbered and even-numbered pixel rows and each pixel in the other pixel row, and the first and second white illuminations from the light source 44 in synchronization therewith. The light a and b are configured to be emitted.

  In this liquid crystal display device, the phase difference element 28 is moved in the vertical direction of the screen of the liquid crystal display panel 1 by the phase difference element moving means 51, and the plurality of λ / 2 phase difference portions 29 and the non-phase difference portions 30. Are alternately opposed to odd-numbered pixel rows and even-numbered pixel rows of the liquid crystal display panel 1, and the driving means 52 causes the λ / 2 phase difference portion 29 of the phase difference element 28 to be disposed in the liquid crystal display panel 1. Of the plurality of pixels of the liquid crystal display panel 1 when each of the plurality of pixels of the liquid crystal display panel 1 is opposed to the even-numbered pixel row. Left-eye image data is written, right-eye image data is written to each pixel in the even-numbered pixel row, and the first and second illumination lights a are emitted from the light source 44 in synchronization with the writing of the image data. , B and λ / 2 of the phase difference element 28 When the phase difference portion 29 is opposed to the even-numbered pixel row of the liquid crystal display panel 1 and the non-phase difference portion 30 is opposed to the odd-numbered pixel row, the even-numbered pixel row of the liquid crystal display panel 1 The right eye image data is written to each pixel, the left eye image data is written to each pixel of the odd-numbered pixel row, and the first and second illuminations from the light source are synchronized with the writing of the image data. Lights a and b are irradiated to display a three-dimensional image.

That is, the first illumination light a emitted from the first light source 35a of the light source 44, since the a transmission axis 6a and straight interlinked linearly polarized light of the opposite polarization plate 6 of the liquid crystal display panel 1, the Of the first illumination light “a”, the light transmitted through the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 and having its polarization plane rotated by 90 ° is applied to the liquid crystal display panel 1 on the opposite side polarizing plate. 6, and the light transmitted through the plurality of non-phase-difference portions 30 of the retardation element 28 without changing the polarization state is absorbed by the opposite polarizing plate 6 of the liquid crystal display panel 1.

The second illumination light b emitted from the second light source unit 35b of the light source 44, since the a transmission axis 6a and the flat line linearly polarized light of the opposite polarization plate 6 of the liquid crystal display panel 1, the Of the second illumination light b, the light transmitted through the plurality of non-phase-difference portions 30 of the phase difference element 28 without changing the polarization state is transmitted through the opposite polarizing plate 6 to the liquid crystal display panel 1. The light that has been incident and transmitted through the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 and whose polarization plane has been rotated by 90 ° is absorbed by the opposite side polarizing plate 6 of the liquid crystal display panel 1.

  Therefore, the λ / 2 phase difference portion 29 of the phase difference element 28 is opposed to the odd-numbered pixel rows of the liquid crystal display panel 1, and the non-phase difference portion 30 is opposed to the even-numbered pixel rows. The left-eye image data is written to each pixel of the odd-numbered pixel row 1, the right-eye image data is written to each pixel of the even-numbered pixel row, and the light source 44 synchronizes with the writing of these image data. When the first and second illumination lights a and b are irradiated, the left-eye image displayed by each pixel in the odd-numbered pixel row in which the left-eye image data of the liquid crystal display panel 1 is written The image appears to the left eye of the observer M, and the right eye image displayed by each pixel in the even-numbered pixel row in which the image data for the right eye is written appears to the right eye of the observer M.

  Further, the λ / 2 phase difference portion 29 of the phase difference element 28 is opposed to the even-numbered pixel row of the liquid crystal display panel 1, and the non-phase difference portion 30 is opposed to the odd-numbered pixel row, so that the liquid crystal display panel The left-eye image data is written to each pixel of the even-numbered pixel row, the right-eye image data is written to each pixel of the odd-numbered pixel row, and the light source 44 synchronizes with the writing of these image data. For the left eye displayed by the pixels of the even-numbered pixel row in which the image data for the left eye of the liquid crystal display panel 1 is written when the first and second illumination lights a and b are irradiated. The image appears to the left eye of the observer M, and the right eye image displayed by each pixel in the odd-numbered pixel row in which the right eye image data is written appears to the observer M's right eye.

  Therefore, according to this liquid crystal display device, the resolution is high, consisting of two left-eye images in every other pixel row alternately displayed by the odd-numbered pixel columns and the even-numbered pixel columns of the liquid crystal display panel 1. The image for the left eye is observed by the left eye of the display observer M, and is used for two right eyes every other pixel row displayed alternately by the even-numbered pixel columns and the odd-numbered pixel columns of the liquid crystal display panel 1 It is possible to cause the left eye of the display observer M to observe a high-resolution right-eye image composed of images.

  In this embodiment, the plurality of λ / 2 phase difference portions 29 and the non-phase difference portions 30 of the phase difference element 28 are arranged in each of the regions divided for each pixel row of the liquid crystal display panel 1. The first area of the liquid crystal display panel and the other second areas are formed so as to correspond to each other, but the screen area 1a of the liquid crystal display panel 1 is divided into a plurality of pixel rows in the vertical direction of the screen, for example, Dividing into about 2 to 10 pixel rows, the plurality of λ / 2 phase difference portions 29 and the non-phase difference portions 30 of the phase difference element 28 are divided into the plurality of pixel rows of the liquid crystal display panel 1. Each other region may be formed so as to correspond to every other first region and every other second region.

Thus, in the liquid crystal display device of this embodiment, the transmission axis of the polarizing plate 6 on the opposite side of the liquid crystal display panel 1 is directed toward the liquid crystal display panel 1 on the side opposite to the observation side of the liquid crystal display panel 1. Directivity that is composed of linearly polarized light orthogonal to 6a and has a peak of emitted light intensity in a direction inclined in the direction of the left or right eye of the display observer M with respect to the normal direction of the liquid crystal display panel 1. first illumination light a having made the transmission axis 6a and the flat line linearly polarized light of the opposite polarization plate 6, and inclined in the direction of the other eye of the observer M with respect to the normal direction A light source 44 for irradiating the second illumination light b having directivity in which the peak of the emitted light intensity exists in a certain direction, and the liquid crystal display panel is disposed between the light source 44 and the liquid crystal display panel 1. A predetermined number of one screen area 1a in the vertical direction of the screen Among a plurality of regions divided for each pixel, a plurality of λ / 2 phase difference portions 29 are formed corresponding to the other first regions, respectively, and correspond to the other second regions. The phase difference element 28 in which a plurality of non-phase difference portions 30 are formed is arranged, and the phase difference element 28 is moved in the vertical direction of the screen of the liquid crystal display panel 1 by the phase difference element moving means 51. The λ / 2 phase difference portion 29 and the non-phase difference portion 30 of the liquid crystal display panel 1 are alternately opposed to the first region and the second region, and the driving means 52 causes the phase difference element 28 to be When the λ / 2 phase difference portion 29 is opposed to the first region of the liquid crystal display panel 1 and the non-phase difference portion 30 is opposed to the second region, a plurality of liquid crystal display panels 1 are provided. Left eye image data for each pixel in the first region. The right eye image data is written to each pixel in the second area, and the first and second illumination lights a and b are emitted from the light source 44 in synchronization with the writing of the image data. The λ / 2 phase difference portion 29 of the phase difference element 28 is opposed to the second region of the liquid crystal display panel 1, and the non-phase difference portion 30 is moved to a position opposite to the first region. The right-eye image data is written to each pixel in the first area of the liquid crystal display panel 1, the left-eye image data is written to each pixel in the second area, and the image data is written. Since the first and second illumination lights a and b are emitted from the light source 44 in synchronization with each other, both the left-eye image and the right-eye image have high resolution and high quality. A three-dimensional image can be displayed.

  Further, in the liquid crystal display device of this embodiment, the driving means 52 causes each pixel in the every other first region of the every other liquid crystal display panel 1 and every other one during the first display period. Left-eye image data and right-eye image data are alternately written to each pixel in the second region, and the first display of the liquid crystal display panel is performed in a second display period subsequent to the first display period. Since the image data for the right eye and the image data for the left eye are alternately written in each pixel in the area and each pixel in the second area, the drive duty of the liquid crystal display panel 1 is increased, It is possible to display a higher quality 3D image without flicker.

(Fourth embodiment)
FIG. 16 is a perspective view of a liquid crystal display device showing a fourth embodiment of the present invention. In this embodiment, components corresponding to the liquid crystal display device of the first embodiment described above are denoted by the same reference numerals, and the description of the same components is omitted.

The liquid crystal display device of this embodiment includes the liquid crystal display panel 1, a light source 53 that is disposed on the opposite side of the liquid crystal display panel 1 from the observation side, and that emits illumination light toward the liquid crystal display panel 1. the viewing side of the liquid crystal display panel 1, and the liquid crystal display panel 1 in the proximity or contact surface is brought in the liquid crystal display panel 1 and the flat row to arranged the phase difference element 28, and the driving means 56 of the liquid crystal display panel 1, A reflective screen 57 that reflects image light emitted from the liquid crystal display panel 1 toward the viewing side in the direction of the display observer, and observation polarizing glasses 58 that allow the observer to observe a three-dimensional image are provided. .

  The light source 53 includes a light source lamp 54 and a reflector 55 that reflects the emitted light from the light source lamp 54 toward the liquid crystal display panel 1, and the reflective screen 57 includes the light source 53. It comprises a concave curved screen that compensates for distortion of the displayed image due to the spread of the irradiation light.

The phase difference element 28 corresponds to every other first area among a plurality of areas obtained by dividing the screen area 1a of the liquid crystal display panel 1 into a predetermined number of pixels in the horizontal direction of the screen. Thus, a plurality of λ / 2 phase difference portions 29 that give a phase difference of ½ wavelength between the ordinary light and the extraordinary light of the transmitted light are formed to correspond to the other second regions, respectively. Te, position is obtained by forming a plurality of non-phase difference unit 30 with no phase difference, a plurality of lambda / 2 phase difference unit 29, the liquid crystal display panel 1 of 4 to the transmission axis of the observation side polarizing plate 5 ° Has slow axis in tilted direction.

  In this embodiment, the screen area 1a of the liquid crystal display panel 1 is divided for each pixel column in the horizontal direction of the screen, and a plurality of λ / 2 phase difference portions 29 and a non-phase difference portion 30 of the phase difference element 28 are obtained. In the up-down direction of the screen, corresponding to every other first area and every other second area of each area divided for each pixel column of the liquid crystal display panel 1 It is formed in a vertical stripe shape along.

  The driving means 56 of the liquid crystal display panel 1 includes a plurality of pixel rows arranged every other row corresponding to the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 among the plurality of pixels of the liquid crystal display panel 1. The image data for one of the left and right eye image data for displaying a three-dimensional image is written in each pixel, and the other corresponding to the plurality of non-phase difference portions 30 of the phase difference element 28 is written. It comprises a drive circuit that writes image data for the other eye into each pixel of a plurality of pixel rows arranged every other row.

  Further, the observation polarizing glasses 58 include a plurality of λ of the phase difference element 28 out of image light composed of linearly polarized light (linearly polarized light parallel to the transmission axis of the observation side polarizing plate) emitted from the liquid crystal display panel 1. / Linear polarization element 59 for the left eye that transmits one of the phase difference portion 29 and the non-phase difference portion 30 and exits to the observation side, and transmits the light reflected by the reflective screen 57, and the phase difference element The right-eye linearly polarizing element 60 that transmits the light reflected by the reflective screen 57 and transmitted through the other of the plurality of λ / 2 phase difference portions 29 and the non-phase difference portion 30. And have.

The left-eye and right-eye linear polarizing elements 59 and 60 of the observation polarizing glasses 58 have transmission axes 59a and 60a in one direction, and the respective linear polarizing elements 59 and 60 are provided on the spectacle frame 58a. 60 of the transmission shaft 59a, a 60a are fixed by straight interlinked.

In this embodiment, the driving means 56 is left on each pixel of a plurality of pixel rows arranged in a row corresponding to the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 of the liquid crystal display panel 1. The image data for the eye is written, and the image data for the right eye is written in each pixel of the plurality of other pixel columns corresponding to the plurality of non-phase difference portions 30 of the phase difference element 28. The transmission axis 59a of the linear polarizing element 59 for the left eye of the polarizing glasses for observation 58 is configured from an area corresponding to every other pixel column in which the image data for the left eye of the liquid crystal display panel 1 is written. The left light that is emitted and transmitted through the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 after the polarization plane is rotated by 90 ° by the λ / 2 phase difference portion 29 and reflected by the reflective screen 57. the polarization plane and a flat row of the image light for the eye, the observation polarized glasses 58 The transmission axis 60a of the right-eye linearly polarizing element 60 is emitted from a region corresponding to every other pixel row in which the right-eye image data is written on the liquid crystal display panel 1, and the phase difference element 28 is emitted. of which a plurality of non-phase difference unit 30 to the polarization plane and a flat row of the image light for the right eye that has been reflected by the reflective screen 57 passes through without changing its polarization state.

  That is, in the liquid crystal display device of this embodiment, a light source 53 that irradiates illumination light toward the liquid crystal display panel 1 is disposed on the opposite side of the liquid crystal display panel 1 from the observation side. On the viewing side, a plurality of screen areas 1a of the liquid crystal display panel 1 corresponding to every other first area among a plurality of areas divided for each predetermined number of pixels in the horizontal direction of the screen. Λ / 2 phase difference portions 29 are formed, and phase difference elements 28 having a plurality of non-phase difference portions 30 formed corresponding to the other second regions are arranged, and the driving means 56 Among the plurality of pixels of the liquid crystal display panel 1, the image for one eye of the left and right eye image data for each pixel corresponding to the plurality of λ / 2 phase difference portions 29 of the phase difference element 28. Data is written, and a plurality of nulls of the phase difference element The image data for the other eye is written in each pixel corresponding to the phase difference unit 30, and a plurality of λ / 2 phase differences of the phase difference element 28 among the image light composed of linearly polarized light emitted from the liquid crystal display panel 1. A left-eye linearly polarizing element 59 that transmits light transmitted through one of the unit 29 and the non-phase-difference unit 30 and emitted to the observation side, and a plurality of λ / 2 phase-difference units 29 of the phase-difference element 28 Observation is performed by observation polarizing glasses 58 having a right-eye linear polarizing element 60 that transmits the light transmitted through the other of the phase difference portions 30 and emitted to the observation side.

  Therefore, according to this liquid crystal display device, for one eye displayed on the area corresponding to the plurality of λ / 2 phase difference portions 29 of the phase difference element 28 in the screen area 1 a of the liquid crystal display panel 1. The image and the image data for the other eye displayed in the region corresponding to the plurality of non-phase difference portions 30 of the phase difference element 28 are respectively observed by the left and right eyes of the display observer M, and the three-dimensional image is obtained. Can be displayed.

  Further, in the liquid crystal display device of this embodiment, a plurality of λ / 2 phase difference portions 29 and a non-phase difference portion 30 of the phase difference element 28 are arranged, and the screen area 1a of the liquid crystal display panel 1 is set in the horizontal direction of the screen. Since it is formed corresponding to a plurality of regions divided for each pixel alternately, it is possible to display a three-dimensional image with sufficient resolution for both the left-eye image and the right-eye image.

  The liquid crystal display device of this embodiment is provided with a reflective screen 57 that reflects image light emitted from the liquid crystal display panel 1 toward the viewing side in the direction of the display observer. Changing to a transmissive screen, the left and right eye image light that has passed through the transmissive screen may be observed by the polarizing glasses for observation 58, or may be observed from the liquid crystal display panel 1 without a screen. The left and right eye image light emitted to the side may be observed by the direct observation polarizing glasses 58.

(Other embodiments)
In each of the above-described embodiments, the plurality of λ / 2 phase difference portions 29 and the non-phase difference portions 30 of the phase difference element 28 are formed in a stripe shape along the vertical direction or the horizontal direction of the screen of the liquid crystal display panel 1. However, the plurality of λ / 2 phase difference portions 29 and the non-phase difference portions 30 of the phase difference element 28 may be formed in a checkered pattern alternately arranged in the vertical and horizontal directions of the screen, for example, In the first embodiment, when the plurality of λ / 2 phase difference portions 29 and the non-phase difference portions 30 of the phase difference element 28 are formed in a checkered pattern, each lens 32 of the lens array 31 also has the λ / 2 phase difference. What is necessary is just to form in the checkered pattern corresponding to the part 29 and the no phase difference part 30. FIG.

  In addition, the liquid crystal display device of each of the embodiments described above includes the TN type liquid crystal display panel 1, but the liquid crystal display panel is of STN type, non-twisted horizontal alignment type, vertical alignment type, or bent alignment type. A liquid crystal display panel or a ferroelectric or antiferroelectric liquid crystal display panel may be used.

  DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display panel, 1a ... Screen area, 7 ... Surface light source, 8 ... Light guide plate (light guide means), 9a, 9b ... Incident end surface (incident part), 10 ... Output surface, 11 ... Reflective surface, 13 ... Guide Light means, 14 ... prism sheet, 16 ... reflector, 14a ... exit surface, 16a ... reflector surface, 18 ... light guide plate (light guide means), 19 ... incident end face (incident part), 20 ... exit surface, 21 ... reflector Surface, 23 ... Diffuser, 24, 25 ... Light emitter, 26, 27 ... Linearly polarizing element, 26a, 27a ... Transmission axis, 28 ... Phase difference element, 29 ... λ / 2 phase difference part, 30 ... Non-phase difference part 31 ... Lens array, 32 ... Lens, 33 ... Driving means, 34, 44, 53 ... Light source, 43, 52, 56 ... Driving means, 51 ... Phase difference element moving means, 57 ... Reflective screen, 58 ... For observation Polarized glasses, 59 ... linear polarizing element for left eye, 60 ... linear polarizing element for right eye, 9a, 60a ... transmission axis.

Claims (10)

A display panel in which a plurality of pixels are arranged;
A light guide plate that emits light toward the display panel;
A first light emitting element disposed on a first side surface of the light guide plate;
A second light emitting element disposed on a second side surface of the light guide plate facing the first side surface;
A first linear polarization element having a transmission axis in one direction, disposed between the first light emitting element and the first side surface of the light guide plate;
A second linearly polarizing element disposed between the second light emitting element and the second side surface of the light guide plate and having a transmission axis in the other direction orthogonal to the one direction;
Of the polarized light that is disposed on the opposite side of the viewing side of the display panel and is emitted from each of the first light emitting element and the second light emitting element and irradiated from the light guide plate and whose polarization directions are orthogonal to each other A polarizing plate whose transmission axis is set so as to be parallel to one polarization direction and orthogonal to the other polarization direction;
Wherein disposed between the light guide plate and the front Kihen light plate, they are arranged alternately on the display panel vertical stripes of the plurality of screens in the arrangement intervals corresponding to the arrangement interval of the pixels along the vertical direction of a given A phase difference element composed of a phase difference portion that rotates the polarization direction of light in the wavelength region of 90 ° and a non-phase difference portion,
Equipped with a,
The first selected image in which the coordinate position of the first pixel column in the image data is the image for the left eye and the coordinate position of the second pixel column adjacent to the first pixel column is the image for the right eye. Time-division switching between data and second selected image data in which the coordinate position of the first pixel column is an image for the right eye and the coordinate position of the second pixel column is an image for the left eye Outputting to the display panel;
In synchronization with the output timing of switching between the first selected image data and the second selected image data, the first light emitting element in the non-emission state the second light emitting element as well as the emission state Switching between a first irradiation state to be performed and a second irradiation state in which the first light emitting element is set to a non-light emitting state and the second light emitting element is set to a light emitting state;
Having,
A driving method of a display device. Acts as one parallax barrier of the above first irradiation state the phase difference portion and the non-phase difference of the phase difference element, wherein the second irradiation state wherein said phase difference of the phase difference element the driving method of a display device according to claim 1 the other of the non-phase difference unit is characterized by the Hatarakuko as a parallax barrier. Acts as one parallax barrier of said phase difference element and the non-phase difference portion when said first selected image data is output to the display panel, the left eye of the coordinate position of the first pixel row The light emitting element is in a light emitting state so that the image for the right eye and the image for the right eye at the coordinate position of the second pixel row are directed to the right eye,
When the second selected image data is output to the display panel, one of the phase difference portion and the non-phase difference portion of the phase difference element functions as a parallax barrier, and the first pixel column claim the right eye image coordinate position is characterized and to Turkey the light emitting device such that the image for the left eye of the coordinate position of the second pixel row toward the left eye to the light emitting state with towards the right eye 1 Or the driving method of the display apparatus of 2. The first selection image data and the second selection image data are each composed of a red component, a green component, and a blue component,
The display device driving method according to claim 1, wherein the color components are switched in a time-division manner and output to the display panel. The first light emitting element and the second light emitting element are respectively composed of a red LED, a green LED, and a blue LED.
5. The display device drive according to claim 4, wherein an LED having a color corresponding to a color component output to the display panel is turned on and the other LEDs are turned off for the light emitting element in the light emitting state. Method. The first selection image data and the second selection image data are red, green, and blue color data corresponding to the red, green, and blue pixels of the display panel, respectively.
The driving method of a display device according to claim 1, characterized in that the pre-output SL to the first selected image data and the second selected image data and the display panel in a time division manner switched to. The first light emitting element and the second light emitting element are each composed of a white LED,
For the light emitting element in the light emitting state, the white LED corresponding to the first selection image data and the second selection image data output to the display panel is turned on and the other white LEDs are turned off. The method for driving a display device according to claim 6. The first light emitting element and the second light emitting element are respectively composed of a red LED, a green LED, and a blue LED.
The red LED, the green LED, and the blue LED corresponding to the first selection image data and the second selection image data output to the display panel are simultaneously turned on for the light emitting element in the light emitting state. The LED driving method according to claim 6, wherein the LED is turned off. The first light-emitting element and the second light-emitting element are arranged so that light emission directions emitted toward the light guide plate are antiparallel to each other. 9. A method for driving a display device according to any one of items 1 to 8. 10. The display device according to claim 1, wherein the first light-emitting element and the second light-emitting element are disposed facing each other toward the light guide plate. Driving method.

Images