JP2008185964A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device that can easily block light in a direction where the viewing angle is restricted. <P>SOLUTION: The display device as one embodiment of this invention is equipped with a plurality of pixels, a black mask segmenting the plurality of pixels, and a display region where the plurality of pixels are disposed in a matrix, and the device has a backlight to emit light to form an image in the display region and a viewing angle restricting member 114 disposed in the light exit side of the backlight and blocking light propagating in the direction where the viewing angle is restricted in the light exiting from the backlight. The viewing angle restricting member 114 is formed to a thickness ten times or more as the thickness of the black mask and is formed between pixels. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device, and more particularly to a display device that regulates the direction of light emitted from a light source.

  Currently, display devices are widely used as an interface for connecting people and machines, and have made remarkable progress. In many cases, it is preferable that the viewing angle of the display device is wide. Therefore, the development of display devices has been advanced in the direction of widening the viewing angle.

  In recent years, with the development of car navigation technology, many cars have been equipped with car navigation systems. In general, the vehicle-mounted display device is provided in the driver's front view, and is provided so as to be visible not only from the driver, but also from the passengers in the passenger seat and the rear seat. Moreover, it arrange | positions in the position which does not disturb a driver | operator's driving visual field. However, there is a problem that the image displayed on the screen of the display device arranged in this way is reflected on the windshield.

  Since the image reflected on the windshield is located within the driving field of view of the driver, the driving field of view may be narrowed. Also, the darker the surroundings of the reflected image are more clearly recognized, so night driving may have a particularly narrow field of view. Accordingly, there is an increasing need to control the viewing angle so that the image displayed on the screen of the display device does not exit in the windshield direction.

  In addition, information that requires high security may be displayed on the display device. At this time, if such high-security information is displayed on a display device with a wide viewing angle, the display may be viewed by a third party. Therefore, the need to control the viewing angle within a specific range is increasing due to the need for ensuring security and protecting privacy.

Therefore, various means have been developed to solve such problems (for example, see Non-Patent Documents 1 and 2). Non-Patent Documents 1 and 2 show a method using a louver that has been widely known as a reflection preventing means. As shown in FIG. 9, a light control film (hereinafter referred to as LCF) 1 has a structure in which a microlouver is laminated with a film such as PET (polyethylene terephthalate). By disposing the LCF 1 on the viewing side of the screen of the display device 2, light traveling in a specific direction is blocked and the viewing angle can be limited.
Gohara, “Current Status of Automotive Display and Future Product / Technology Trends”, Finetech Japan 2006, May 2006 "3M Optical Systems Products Light Control Film", [online], Sumitomo 3M Limited, [Search January 25, 2007], Internet <URL: http://www.mmm.co.jp/display/light/ index.html>

  However, the louvers shown in Non-Patent Documents 1 and 2 have a structure in which micro louvers are laminated with a film such as PET, and there is a problem that the thickness of the display panel itself increases. In addition, the louver is expensive, and the cost of the display device with the louver attached is increased. Furthermore, louver pitch control is required, and it is difficult to align the pixel pitch of the display device, and there is a problem that moire or the like occurs.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a display device capable of suppressing an increase in thickness of the display device and shielding light in a viewing angle limit direction.

  A display device according to a first aspect of the present invention is a display device that includes a plurality of pixels, a black mask that partitions the plurality of pixels, and a display region in which the plurality of pixels are arranged in a matrix. A light emitting part that emits light for forming an image in the display region, and light that is provided on the light emitting side of the light emitting part and that is directed from the light emitting part toward the viewing angle limit direction A viewing angle limiting member that shields light, and the viewing angle limiting member is formed to be 10 times or more thicker than the thickness of the black mask and is formed between the pixels. As a result, an increase in the thickness of the display device can be suppressed, and a display device capable of shielding light in the viewing angle limit direction can be provided.

  In the display device according to a second aspect of the present invention, in the above display device, the viewing angle limiting member is formed at a pitch substantially the same as the pitch of the pixels. Thereby, generation | occurrence | production of a moire can be suppressed.

  In the display device according to a third aspect of the present invention, in the above display device, the viewing angle limiting member is formed at a pitch that is an integral multiple of the pitch of the pixels. Thereby, generation | occurrence | production of a moire can be suppressed.

  The display device according to a fourth aspect of the present invention is the display device as described above, wherein the viewing angle limiting member is formed over substantially the entire display area. Thereby, light shielding in the viewing angle limiting direction can be reliably performed.

  In the display device according to a fifth aspect of the present invention, in the above display device, the viewing angle limiting member is formed only on the viewing angle limiting direction side of the display area. As a result, the luminance in the viewing angle limit direction can be reduced and the cost can be reduced.

  In the display device according to the sixth aspect of the present invention, in the above display device, each of the viewing angle limiting members has substantially the same height. Thereby, light shielding in the viewing angle limiting direction can be reliably performed.

  In the display device according to a seventh aspect of the present invention, in the above display device, each of the viewing angle limiting members is formed such that the height decreases as the distance from the viewing angle limiting direction increases. Thereby, the brightness | luminance of a viewing angle restriction | limiting direction can be made into a predetermined value.

  In the display device according to an eighth aspect of the present invention, in the above display device, the pixel includes a first electrode formed on a substrate, and the viewing angle limiting member includes the substrate and the first electrode. It is formed between these electrodes.

  In the display device according to a ninth aspect of the present invention, in the display device described above, the pixel performs display by controlling light transmittance from the light emitting portion. The present invention is particularly effective in such a case.

  In the display device according to a tenth aspect of the present invention, in the above display device, the pixel further includes a second electrode formed on the substrate to face the first electrode, and the light The emission part is formed between the first electrode and the second electrode. The present invention is particularly effective in such a case.

  In a display device according to an eleventh aspect of the present invention, in the above display device, the pixel includes a first electrode formed on the substrate and a second electrode formed to face the first electrode. The light emitting portion is formed between the first electrode and the second electrode, and the viewing angle limiting member is formed on the second electrode. is there. The present invention is particularly effective in such a case.

  The display device according to a twelfth aspect of the present invention is the display device described above, further comprising a counter substrate disposed to face the substrate, wherein the viewing angle limiting member is formed between the substrate and the counter substrate. It is what has been. Thereby, the viewing angle limiting member can be formed in a space formed by the substrate and the counter substrate.

  ADVANTAGE OF THE INVENTION According to this invention, the display apparatus which can suppress the increase in the thickness of a display apparatus and can light-shield in a viewing angle restriction | limiting direction can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following description explains the embodiment of the present invention, and the present invention is not limited to the following embodiment.

Embodiment 1 FIG.
With reference to FIG. 1, the display device according to the first embodiment will be described. Here, an example in which a TN (Twisted Nematic) type active matrix liquid crystal display element is used as an example of a display element used in a display device will be described. The display device according to the present embodiment is an in-vehicle display device and is used in a car navigation system. Accordingly, an in-vehicle liquid crystal display device (hereinafter referred to as a liquid crystal display device) 100 is provided at the center in the front of the vehicle 200 as shown in FIG. Is provided so as to be visible. Here, prevention of reflection of light emitted from the liquid crystal display device 100 toward the windshield 201 will be described, but it can also be used for prevention of reflection on a side glass or a side mirror.

  FIG. 1 is a schematic diagram showing a configuration of a liquid crystal display device 100 according to the present embodiment. As shown in FIG. 1, the liquid crystal display device 100 includes a liquid crystal display element 101 and a backlight 102. In FIG. 1, the right direction (eye point side) is the viewing side, and the left direction is the anti-viewing side. Further, the direction indicated by the arrow in FIG. A liquid crystal display element 101 is disposed on the viewing side of the backlight 102.

  The liquid crystal display element 101 performs image display by controlling the transmittance of light emitted from the backlight 102. Here, the configuration of the liquid crystal display element 101 will be described with reference to FIG. FIG. 3 is a diagram showing a configuration of the liquid crystal display element 101 according to the present embodiment. As shown in FIG. 3, the liquid crystal display element 101 has a configuration in which a liquid crystal 105 is sandwiched between a substrate 103 and a counter substrate 104 arranged to face the substrate 103. The substrate 103 and the counter substrate 104 are transparent insulating substrates such as glass.

  A plurality of pixel electrodes 106 are formed on the substrate 103 at regular intervals in the column direction. On the counter substrate 104, counter electrodes 107 are formed at regular intervals in the row direction so as to intersect with the pixel electrodes 106. The counter electrode 107 is opposed to the pixel electrode 106 with the liquid crystal 105 interposed therebetween. An intersection between the pixel electrode 106 and the counter electrode 107 corresponds to a pixel. A plurality of pixels arranged in a matrix form a display area. The pixel electrode 106 and the counter electrode 107 are formed of a transparent conductive thin film such as ITO (Indium Tin Oxide), for example.

  A color in which a colored layer 108 made of a resin colored in any of R (red), G (green), and B (blue) is arranged on the counter substrate 104 on which the counter electrode 107 is formed at a position corresponding to a pixel. A filter is provided. Further, a BM (Black Mask) 109 is provided between the colored layers 108 of R, G, and B colors. The colored layer 108 and the BM 109 are formed with a thickness of 2 to 3 μm, for example. In addition, a liquid crystal display element for monochrome display without a color filter may be used.

  An alignment film 110 that is aligned in a predetermined direction is provided on the opposing surfaces of the two substrates 103 and 104. A space between the substrates 103 and 104 is held by a spacer 111 so as to have a predetermined interval. The periphery of both the substrates 103 and 104 is bonded by a frame-shaped sealing material 112. A liquid crystal 105 is sealed in a space formed by the substrates 103 and 104 and the sealing material 112. The liquid crystal 105 sandwiched between the substrates 103 and 104 is aligned in a predetermined direction by the alignment film 110. A polarizing plate 113 is attached to the outer surface of each of the substrate 103 and the counter substrate 104. As the polarizing plate 113, a dichroic polarizing plate made of PVA or the like can be used.

  Note that a driving circuit (not shown) is provided at either end of the substrate 103 or the counter substrate 104 of the liquid crystal display element 101. The drive circuit outputs various control signals, scan voltages, display voltages, and the like necessary for image display based on display data input from the outside.

  A backlight 102 is provided on the non-viewing side of the liquid crystal display element 101. The backlight 102 irradiates the liquid crystal display element 101 with white light from the non-viewing side of the liquid crystal display element 101. Therefore, in the present embodiment, the backlight 102 serves as a light emitting unit that emits light for forming an image in the display area. As the backlight 102, for example, a backlight having a general configuration including a light source, a light guide plate, a prism sheet, and the like can be used.

  A viewing angle limiting member 114 is formed between the counter substrate 104 and the counter electrode 107. The viewing angle limiting member 114 is provided on the light emission side from the backlight 102 which is a light emission part. The viewing angle limiting member 114 shields the light emitted from the backlight 102 and transmitted through the liquid crystal 105 toward the viewing angle limiting direction in which the viewing angle is desired to be limited. The configuration of the viewing angle limiting member 114 will be described in detail later.

  Here, driving of the liquid crystal display device 100 described above will be described. When a display voltage is supplied from the driver circuit to each pixel electrode 106 and the counter electrode 107, the arrangement of liquid crystals between the pixel electrode 106 and the counter electrode 107 changes according to the potential difference between the pixel electrode 106 and the counter electrode 107. The direction of polarization of the linearly polarized light that has passed through the non-viewing-side polarizing plate 113 is controlled by the liquid crystal 105, and the transmittance of light that passes through the viewing-side polarizing plate 113 is controlled. Thereby, the transmission amount of the light incident from the backlight 102 is controlled. Each pixel of the liquid crystal display element 101 performs display of various shades by color gradation according to the amount of transmitted light and RGB color display.

FIG. 2 is a diagram for explaining the positional relationship between the light emitted from the liquid crystal display device 100 and the driver when the liquid crystal display device 100 is mounted on an automobile. As shown in FIG. 2, the liquid crystal display device 100 is disposed in front of the vehicle. Part of the light emitted from the liquid crystal display device 100 is directed directly toward the driver. Part of the light is reflected by the windshield 201 and travels toward the driver. Since the image reflected on the windshield 201 is positioned within the driving field of view of the driver, the driving field of view is narrowed. Therefore, it is necessary to block light emitted from the liquid crystal display device 100 and traveling toward the windshield 201. In the case of the present embodiment, the direction of light toward the windshield 201 is the viewing angle limit direction. Here, the direction 30 ° above the display surface of the liquid crystal display device 100 is set as the viewing angle limiting direction, and the luminance in the viewing angle limiting direction is set to be smaller than 50 cd / m ² .

  Here, the configuration of the viewing angle limiting member 114 will be described in detail with reference to FIGS. 4 and 5. FIG. 4 is a diagram illustrating a configuration of the counter substrate 104 on which the viewing angle limiting member 114 is formed. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4 shows the counter substrate 104 as viewed from the lower side of FIG. 3, that is, the counter substrate 104 as viewed from the surface side on which the viewing angle limiting member 114, the counter electrode 107, and the like are formed. For the sake of explanation, FIG. 5 illustrates a case where eight counter electrodes 107 are formed.

  As shown in FIGS. 4 and 5, viewing angle limiting members 114 having substantially the same height are formed on the counter substrate 104. As the viewing angle limiting member 114, for example, a light-shielding material such as a black pigment called carbon black can be used. The viewing angle limiting member 114 is formed between the adjacent counter electrodes 107 so as to extend in the same direction as the direction in which the counter electrode 107 extends. Therefore, the viewing angle limiting member 114 is formed to be orthogonal to the pixel electrode 106 formed on the substrate 103. Further, the viewing angle limiting member 114 is, for example, 100 μm so as to be 10 times or more the height of the BM 109, and is erected on the counter substrate 104 in a convex shape. That is, the viewing angle limiting member 114 is arranged in a convex shape between the pixels and is formed over substantially the entire display area.

  Thus, by forming the viewing angle limiting member 114 in a convex shape between the pixels over substantially the entire display area, it is possible to reliably block the light toward the viewing angle limiting direction, and the luminance in the viewing angle limiting direction. Can be a predetermined value. In addition, as in the prior art, it is possible to obtain the same viewing angle limiting effect as that of LCF obtained by laminating louvers with PET resin, and it is possible to suppress an increase in the thickness of the liquid crystal display element as compared with the case where louvers are used.

  The viewing angle limiting member 114 is formed at a pitch that is substantially the same as the pixel pitch. Thereby, the moire which generate | occur | produces between the viewing angle limiting member 114 and a pixel can be suppressed. The viewing angle limiting member 114 may be formed at a pitch that is an integral multiple of the pixel pitch.

  As shown in FIG. 5, a planarization film that fills the step between the viewing angle limiting member 114 and the counter substrate 104 between the plurality of viewing angle limiting members 114 that are erected in a convex shape on the counter substrate 104. 115 is formed. As the planarizing film 115, a transparent resin or the like can be used. Thereby, the level difference between the viewing angle limiting member 114 and the counter substrate 104 is flattened, and the colored layer 108 and the BM 109 are formed thereon. Then, the counter electrode 107 is formed on the color filter composed of the colored layer 108 and the BM 109.

  And as above-mentioned, the board | substrate 103 is arrange | positioned facing the surface in which the viewing angle limiting member 114 of the counter substrate 104 was formed. Accordingly, the viewing angle limiting member 114 is formed between the substrate 103 and the counter substrate 104. Thereby, the viewing angle limiting member 114 can be disposed in a space formed by the substrate 103, the counter substrate 104, and the sealing material 112. Note that the viewing angle limiting member 114 is not limited to the counter substrate 104 side, and may be formed on the substrate 103 side. Further, it can be formed on the outer surfaces of the substrate 103 and the counter substrate 104.

  Here, with reference to FIG. 6, the height of the viewing angle limiting member 114 and the viewing angle limiting angle will be described. As shown in FIG. 6, the size of the pixel in the upper display direction is x (μm), the height of the viewing angle limiting member 114 is h (μm), and the viewing angle limiting angle is θ (°). The viewing angle limiting angle θ is an angle formed by a plane passing through the pixel end on the opposite side to the side where the viewing angle limiting member 114 is provided and the end of the viewing angle limiting member 114 with the pixel surface. That is, it refers to the angle of light that is blocked by the viewing angle limiting member 114 formed at the height h out of the light emitted from the pixel that is the light emitting surface.

As shown in Table 1, in the WQVGA liquid crystal display element having a 7-inch diagonal size, the number of pixels in the horizontal direction is 400, and the number of pixels in the vertical direction (the direction toward the top of the display) is 240. At this time, the pixel size x is 367.7 μm. On the other hand, in a WVGA liquid crystal display element of the same size, the number of pixels in the horizontal direction is 800 and the number of pixels in the vertical direction is 600. At this time, the pixel size x is 171.5 μm.

The size x (μm) of the pixel and the angle of light blocked by the viewing angle limiting member 114 having a height h from the pixel that is the light emitting surface can be obtained by the following equations.
θ = tan ⁻¹ (h / x)

表２に示すように、ＷＱＶＧＡの液晶素子を用いた場合、視野角制限部材の高さを１００μｍとすると、視野角制限角度θは１５．２°となる。 Table 2 shows the viewing angle limiting angles when the height h of the viewing angle limiting member 114 is changed when a WQVGA liquid crystal element is used.

As shown in Table 2, when a WQVGA liquid crystal element is used, if the height of the viewing angle limiting member is 100 μm, the viewing angle limiting angle θ is 15.2 °.

表３に示すように、視野角制限部材１１４の高さを１００μｍとすると、視野角制限角度θは３０．２°となる。このように、画素間に所定の高さの視野角制限部材１１４を配置することにより、視野角を制限したい方向の輝度を低下させることができる。なお、視野角制限部材１１４の数、高さ、幅等は、視野角制限方向での輝度、制限角度に応じて適宜変更することができる。例えば、視野角制御角度を１０°以上確保したいという要求であれば、視野角制限部材１１４の高さをＢＭ１０９の厚みよりも１０倍以上厚くし、具体的には、ＷＱＶＧＡでは７０μｍ以上、ＷＶＧＡでは４０μｍ以上とする。 Table 3 shows the viewing angle restriction angles when the height h of the viewing angle restriction member 114 is changed when a WVGA liquid crystal element is used.

As shown in Table 3, when the height of the viewing angle limiting member 114 is 100 μm, the viewing angle limiting angle θ is 30.2 °. Thus, by arranging the viewing angle limiting member 114 having a predetermined height between the pixels, it is possible to reduce the luminance in the direction in which the viewing angle is desired to be limited. Note that the number, height, width, and the like of the viewing angle limiting member 114 can be appropriately changed according to the luminance and the limiting angle in the viewing angle limiting direction. For example, if it is required to secure a viewing angle control angle of 10 ° or more, the height of the viewing angle limiting member 114 is made 10 times or more thicker than the thickness of the BM109. 40 μm or more.

  FIG. 7 shows another example of the configuration of the counter substrate 104 formed with the viewing angle limiting member 114 used in the liquid crystal display device 100 according to the present embodiment. As shown in FIG. 7, the viewing angle limiting member 114 may be formed only on the viewing angle limiting direction side of the display area. In the example shown in FIG. 7, the viewing angle limiting member 114 is formed on the upper display side where the viewing angle is to be limited, that is, the upper half side in the display area. Thus, by forming the viewing angle limiting member 114 only on the viewing angle limiting direction side of the display area, the luminance in the viewing angle limiting direction can be reduced to a predetermined value, and the viewing angle limiting member 114 is applied. Cost can be reduced.

Embodiment 2. FIG.
A display device according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 8 is a diagram showing a configuration of the counter substrate 104 used in the liquid crystal display device 100 according to the present embodiment. In the present embodiment, the difference from the first embodiment is the height of the viewing angle limiting member 114. In this embodiment, in FIG. 8, the same components as those in FIG. Note that configurations other than the counter substrate 104 can be substantially the same as those described in FIG.

  As shown in FIG. 8, the viewing angle limiting member 114 is formed on the counter substrate 104 such that its height decreases as the distance from the viewing angle limiting direction increases. In the present embodiment, the height of the viewing angle limiting member 114 decreases as the distance from the upper display portion that is the viewing angle limiting direction increases. As the viewing angle limiting member 114, a light-sensitive photosensitive resin or the like can be used. By partially adjusting the amount of light irradiation using a multi-tone mask such as a gray-tone mask or a half-tone mask, the viewing angle limiting members 114 having different heights can be formed.

  Further, as described in the first embodiment, the viewing angle limiting member 114 is formed between the adjacent counter electrodes 107 so as to extend in the same direction as the direction in which the counter electrode 107 extends. . Therefore, the viewing angle limiting member 114 is formed to be orthogonal to the pixel electrode 106 formed on the substrate 103. In addition, the viewing angle limiting member 114 is erected in a convex shape between the pixels on the counter substrate 104 and is formed over substantially the entire display area.

  In this way, the viewing angle limiting member 114 is formed in a convex shape between the pixels so as to decrease in height as it moves away from the viewing angle limiting direction over substantially the entire surface of the display area, thereby moving in the viewing angle limiting direction. The light can be shielded, and the luminance in the viewing angle limit direction can be set to a predetermined value. As in the prior art, it is possible to obtain the same viewing angle limiting effect as LCF obtained by laminating a louver with a PET resin, and it is possible to suppress an increase in the thickness of the liquid crystal display element compared to the case where a louver is used. In addition, the cost for the viewing angle limiting member 114 can be reduced as compared to the case where the viewing angle limiting member 114 is formed at substantially the same height over the entire display area.

  Further, as shown in FIG. 8, flattening is performed to fill a step between the viewing angle limiting member 114 and the counter substrate 104 between the plurality of viewing angle limiting members 114 formed in a convex shape on the counter substrate 104. A film 115 is formed. Thereby, the level difference between the viewing angle limiting member 114 and the counter substrate 104 is flattened, and the colored layer 108 and the BM 109 are formed thereon. Then, the counter electrode 107 is formed on the color filter composed of the colored layer 108 and the BM 109. And as above-mentioned, the board | substrate 103 is arrange | positioned facing the surface in which the viewing angle limiting member 114 of the counter substrate 104 was formed. Accordingly, the viewing angle limiting member 114 is formed between the substrate 103 and the counter substrate 104.

  Note that the viewing angle limiting member 114 is not limited to the counter substrate 104 side, and may be formed on the substrate 103 side. Further, it can be formed on the outer surfaces of the substrate 103 and the counter substrate 104. The viewing angle limiting member 114 may be formed at a pitch that is substantially the same as the pixel pitch, or may be formed at an integer multiple of the pixel pitch.

  Further, as described with reference to FIG. 7, the viewing angle limiting member 114 may be formed only on the viewing angle limiting direction side of the display area. That is, the viewing angle limiting member 114 may be formed only on the viewing angle limiting direction side in the display area so that the height thereof decreases as the distance from the viewing angle limiting direction increases. By forming the viewing angle limiting member 114 only on the viewing angle limiting direction side of the display area, the luminance in the viewing angle limiting direction can be reduced to a predetermined value, and the cost for the viewing angle limiting member 114 can be reduced. Can be planned.

  Although an example in which a TN type active matrix liquid crystal display element is used as the liquid crystal display element 101 is shown here, the present invention is not limited to this. For example, as a type of another liquid crystal display element, an STN (Super Twisted Nematic) type liquid crystal display element, an IPS (In Plane Switching) type liquid crystal display element in which a pixel electrode and a common electrode are formed on the same substrate, or the like is used. be able to. The present invention can be applied to various types of liquid crystal display elements as described above.

  Moreover, it is also possible to use display elements other than a liquid crystal display element, such as an organic EL element. When a self-luminous element such as an organic EL display element, PDP, VFD, or FED is used instead of the liquid crystal display element 101, the viewing angle limiting member 114 is disposed on the viewing side of the self-luminous element, that is, the light emitting side. For example, in the case of using an organic EL display element, a pixel includes a first electrode formed on a substrate and a second electrode disposed to face the first electrode, An organic light emitting layer that emits light is formed between the second electrode and the second electrode. The viewing angle limiting member is formed between the first electrode and the substrate in the bottom emission type. In the case of a top emission type organic EL display element, it is formed on the second electrode. In addition, the viewing angle limiting member is formed between the opposing substrate disposed to face the substrate on which the organic EL element is formed.

  In addition, although the on-vehicle liquid crystal display device has been described as an example here, the present invention is not limited to this. For example, when it is desirable to limit the display direction such as an ATM used for providing information for individuals, a display of each seat of an aircraft, a railroad, etc., the viewing angle can be easily limited. Furthermore, in the present embodiment, the viewing angle limiting member is formed in a convex manner on the substrate, but the present invention is not limited to this. For example, a glass substrate is etched with hydrofluoric acid or the like to form a groove-shaped digging portion, and the digging portion is filled with a material containing a light-shielding member such as carbon black, so that the viewing angle limiting member can be used. Good.

2 is a schematic diagram illustrating an example of a configuration of a liquid crystal display device according to Embodiment 1. FIG. It is a figure which shows the axial direction of the light which injects into a driver | operator's eyes from a liquid crystal display device. 3 is a cross-sectional view illustrating an example of a configuration of a liquid crystal display device according to Embodiment 1. FIG. 3 is a diagram illustrating an example of a configuration of a counter substrate used in the liquid crystal display device according to Embodiment 1. FIG. It is AA sectional drawing of FIG. It is a figure for demonstrating a viewing angle restriction | limiting angle. 6 is a diagram showing another example of the configuration of the counter substrate used in the liquid crystal display device according to Embodiment 1. FIG. It is a figure which shows the structure of the opposing board | substrate used for the liquid crystal display device which concerns on the mobile 2 of implementation. It is a schematic diagram which shows the vehicle-mounted display apparatus structure using the conventional louver.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 In-vehicle liquid crystal display device 101 Liquid crystal display element 102 Backlight 103 Substrate 104 Counter substrate 105 Liquid crystal 106 Pixel electrode 107 Counter electrode 108 Colored layer 109 BM
110 Alignment Film 111 Spacer 112 Sealing Material 113 Polarizing Plate 114 Viewing Angle Limiting Member 115 Flattening Film 200 Automobile 201 Windshield

Claims (12)

A display device comprising: a plurality of pixels; a black mask that partitions the plurality of pixels; and a display region in which the plurality of pixels are arranged in a matrix.
A light emitting portion that emits light for forming an image in the display area;
A viewing angle limiting member that is provided on the light emitting side of the light emitting unit and shields light that travels in the viewing angle limiting direction from the light emitted from the light emitting unit;
The display device according to claim 1, wherein the viewing angle limiting member is formed more than 10 times thicker than the thickness of the black mask and is formed between the pixels.   The display device according to claim 1, wherein the viewing angle limiting member is formed at a pitch substantially the same as a pitch of the pixels.   The display device according to claim 1, wherein the viewing angle limiting member is formed at a pitch that is an integral multiple of the pitch of the pixels.   The display device according to claim 2, wherein the viewing angle limiting member is formed over substantially the entire display area.   The display device according to claim 1, wherein the viewing angle limiting member is formed only on the viewing angle limiting direction side of the display area.   The display device according to claim 2, wherein each of the viewing angle limiting members has substantially the same height.   Each of the said viewing angle limiting member is a display apparatus of any one of Claims 2-5 formed so that height may become low as it distances from a viewing angle limiting direction. The pixel has a first electrode formed on a substrate,
The display device according to claim 1, wherein the viewing angle limiting member is formed between the substrate and the first electrode.   The display device according to claim 8, wherein the pixel performs display by controlling light transmittance from the light emitting unit. The pixel further includes a second electrode formed on the substrate so as to face the first electrode,
The display device according to claim 8, wherein the light emitting portion is formed between the first electrode and the second electrode. The pixel has a first electrode formed on the substrate and a second electrode formed to face the first electrode,
The light emitting portion is formed between the first electrode and the second electrode,
The display device according to claim 1, wherein the viewing angle limiting member is formed on the second electrode. A counter substrate disposed opposite to the substrate;
The display device according to claim 1, wherein the viewing angle limiting member is formed between the substrate and the counter substrate.

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