JP4254092B2 - Liquid crystal display panel and electronic equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid crystal display panel and an electronic apparatus using the same.
[0002]
[Prior art]
In general, a so-called reflective liquid crystal display panel has a configuration in which a reflective layer such as aluminum is formed on the back surface of a pair of substrates sandwiching liquid crystal. Under such a configuration, external light such as sunlight and indoor illumination light incident from the observation side is reflected from the surface of the reflection layer and then emitted from the observation side, whereby a reflective display is realized. According to this type of liquid crystal display panel, since display is possible without a light source, there is an advantage that the device can be thinned and the power consumption can be reduced. However, there is a drawback that sufficient visibility cannot be ensured in an environment where there is not enough external light.
[0003]
Therefore, in recent years, so-called transflective liquid crystal display panels capable of transmissive display in addition to the above-described reflective display have been proposed. That is, in this type of liquid crystal display panel, a slit (opening) is provided at a position corresponding to each pixel in the reflective layer formed on the substrate on the back side, and a back surface is provided on the back side of the liquid crystal display panel. A light unit is provided. Under such a configuration, the transmissive display is realized by emitting the light emitted from the backlight unit and incident on the substrate on the back side through the slit provided in the reflective layer and emitted to the observation side. According to the transflective liquid crystal display panel, the reflection type display described above is performed in an environment where there is sufficient external light, while the backlight unit is turned on in an environment where there is almost no external light. There is an advantage that visibility can be ensured by performing.
[0004]
[Problems to be solved by the invention]
However, this type of transflective liquid crystal display panel emits light for reflective display due to errors that may occur in various processes such as a process of forming a reflective layer and a process of bonding a pair of substrates. The ratio of the area of the reflective region (hereinafter referred to as “reflective region”) and the area of the region that transmits light for transmissive display (hereinafter referred to as “translucent region”) is the expected value. The ratio may be different from the ratio (design ratio). For example, when the area of the region that transmits light is smaller than the intended area and the area of the region that reflects light is larger than the intended area, the brightness when the transmissive display is performed is There is a problem that display quality varies depending on the display method, such as when the display becomes darker than when the reflective display is performed.
[0005]
The present invention has been made in view of the circumstances described above, and a liquid crystal display panel capable of suppressing variation in the area ratio between the light-transmitting region and the reflecting region due to manufacturing errors, and It aims at providing the used electronic equipment.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is a liquid crystal display panel comprising a first substrate and a second substrate that sandwich a liquid crystal opposite to each other, and a reflective layer provided on the second substrate,
A reflection region that reflects incident light from the first substrate side corresponding to the reflection layer, and a light transmission that transmits light from the second substrate toward the first substrate corresponding to a region other than the reflection layer The shape of the reflective layer is selected so that the region is adjacent to each other along each of a plurality of sides that define the pixel in the pixel. The reflective layer has a shape extending over the plurality of pixels forming a column. It is characterized by that.
[0007]
According to this liquid crystal display panel, the reflection region and the light transmission region are adjacent to each other along each side of the pixel in the pixel. For this reason, even when the portion near the periphery of the pixel cannot contribute to the display due to a manufacturing error, the areas of both the reflective region and the light-transmitting region are reduced. Only one of these areas can be prevented from decreasing. Therefore, even if a manufacturing error occurs, it is possible to avoid a situation where the area ratio of the reflective area and the translucent area is different from the intended area ratio. The display quality (brightness) balance can be maintained.
[0008]
For example, in a liquid crystal panel having a light-shielding layer provided on the surface of the first substrate to shield the periphery of the pixel, a part of the light-shielding layer overlaps with a part near the periphery of the pixel due to a manufacturing error, There may be a case where the portion cannot contribute to display. Even in such a case, according to the present invention, it is possible to avoid a situation in which the area ratio between the reflective region and the light-transmitting region is different from the intended (designed) area ratio. A plurality of the pixels corresponding to any of a plurality of colors are provided, provided on the surface of the second substrate corresponding to each of the plurality of pixels, and having a wavelength corresponding to any of the plurality of colors. A structure including a color filter that transmits light may be used.
[0009]
Here, in order to reliably suppress variation in the area ratio between the reflective region and the light-transmitting region, it is desirable that the areas of the reflective region and the light-transmitting region where the portions such as the light shielding layer can overlap are approximately equal. It can be said. From this point of view, it is desirable that the lengths along the sides of the pixel in the reflective region and the light transmitting region are substantially equal.
[0010]
In the above liquid crystal display panel , The shape of the reflective layer is a shape extending across the plurality of pixels forming a row. The In the configuration, if an electrode that is provided on the surface of the reflective layer and is electrically connected to the reflective layer and applies a voltage to the liquid crystal is provided, not only the electrode but also the reflective layer is used as a wiring. Therefore, the wiring resistance can be reduced.
[0011]
Furthermore, since the electronic apparatus according to the present invention includes the above-described liquid crystal display panel, even if an error occurs during the manufacture of the liquid crystal display panel, the display quality balance in the reflective display and the transmissive display is maintained. Can do. Examples of such electronic devices include personal computers and mobile phones.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. Such an embodiment shows one aspect of the present invention, and does not limit the present invention, and can be arbitrarily changed within the scope of the present invention.
[0013]
First, an embodiment in which the present invention is applied to a passive matrix type transflective liquid crystal display panel will be described with reference to FIG. Note that, in FIG. 1 and each figure shown below, the scales are different for each layer and each member so that each layer and each member have a size that can be recognized on the drawing.
[0014]
As shown in FIG. 1, the liquid crystal display device includes a liquid crystal display panel 1 and a backlight unit 2. In the liquid crystal display panel 1, a first substrate 11 and a second substrate 12 are bonded to each other through a sealing material 14, and a TN (Twisted Nematic) type or STN (STN) is formed in a region surrounded by both the substrates and the sealing material 14. Super Twisted Nematic) type liquid crystal 15 is enclosed. The backlight unit 2 is disposed on the second substrate 12 side of the liquid crystal display panel 1. Hereinafter, as shown in FIG. 1, the side opposite to the backlight unit 2 with respect to the liquid crystal display panel 1 is referred to as “observation side”. That is, the “observation side” is a side on which an observer who visually recognizes an image displayed by the liquid crystal display panel 1 is located.
[0015]
The backlight unit 2 includes a light source 21 and a light guide plate 22. The light source 21 is composed of, for example, an LED (Light Emitting Diode), a cold cathode tube, or the like, and irradiates the side end surface of the light guide plate 22 with light. The light guide plate 22 is a plate-like member for uniformly guiding the light from the light source 21 incident on the side end surface thereof to the substrate surface of the liquid crystal display panel 1. Further, on the surface of the light guide plate 22 facing the liquid crystal display panel 1, a diffusion plate for uniformly diffusing the light emitted from the light guide plate 22 with respect to the liquid crystal display panel 1 is attached. A reflective plate is attached to the surface opposite to the liquid crystal display panel 1 so that light traveling from the light guide plate 22 toward the opposite side of the liquid crystal display panel 1 is reflected to the liquid crystal display panel 1 side (all not shown). The light source 21 is not always turned on, and is turned on according to an instruction from the user or a detection signal from the sensor when used in an environment where there is not enough external light.
[0016]
On the other hand, the first substrate 11 and the second substrate 12 of the liquid crystal display panel 1 are plate-like members having light transmissivity, such as glass, quartz, and plastic. As shown in FIG. 1, phase difference plates 116 and 124 for compensating for interference colors are polarized on the outer surfaces of the first substrate 11 and the second substrate 12 (opposite the liquid crystal 15), and incident light is polarized. Polarizing plates 117 and 125 are attached to each other.
[0017]
A reflective layer 121, a segment electrode 122, and an alignment film 123 are formed on the inner surface (liquid crystal 15 side) surface of the second substrate 12. The reflective layer 121 is a layer for reflecting incident light from the first substrate 11 side, and is formed of a light reflective material such as a single metal such as aluminum or silver or an alloy containing these as main components. . However, the reflective layer 121 in the present embodiment is formed of an alloy containing silver (Pd) and copper (hereinafter referred to as “APC alloy”) containing silver as a main component. In addition, the surface of the second substrate 12 on which the reflective layer 121 is formed is roughened to form a scattering structure (unevenness) on the surface of the reflective layer 121, but the illustration is omitted. Here, the case where a scattering structure is formed in the reflective layer 121 is illustrated, but instead of this configuration, a so-called forward scattering method in which the polarizing plate 117 on the observation side has scattering characteristics may be employed.
[0018]
As shown in FIG. 2, the segment electrode 122 is a strip-like electrode extending in the Y direction, and is formed of a transparent conductive material such as ITO (Indium Tin Oxide). As shown in FIG. 1 and FIG. 2, the reflective layer 121 described above is formed in a shape extending in the Y direction similarly to the segment electrode 122, and is covered with each segment electrode 122. That is, the reflective layer 121 in this embodiment is electrically connected to each segment electrode 122 and not only reflects incident light from the first substrate 11 side but also functions as a wiring together with the segment electrode 122. ITO forming the segment electrode 122 has a relatively high resistance value, but in this embodiment, the reflective layer 121 made of an APC alloy having a low resistance value also functions as a wiring, so that the wiring resistance is reduced.
[0019]
The alignment film 123 shown in FIG. 1 is formed so as to cover the surface of the second substrate 12 on which the reflective layer 121 and the segment electrode 122 are formed. This alignment film 123 is an organic thin film such as polyimide, and is subjected to a rubbing process for defining the alignment direction of the liquid crystal 15 when no voltage is applied.
[0020]
On the other hand, a light shielding layer 111, a color filter 112, an overcoat layer 113, a common electrode 114 and an alignment film 115 are formed on the inner surface (the liquid crystal 15 side) surface of the first substrate 11. The common electrode 114 is a strip-shaped electrode formed of a transparent conductive material such as ITO, and extends in a direction intersecting with the segment electrode 122 on the second substrate 12 (that is, the X direction) as shown in FIG. . Then, the orientation direction of the liquid crystal 15 sandwiched between the first substrate 11 and the second substrate 12 changes according to the voltage difference applied between the common electrode 114 and the segment electrode 122. Hereinafter, a region where the common electrode 114 and the segment electrode 122 face each other is referred to as a “sub-pixel”. That is, the sub-pixel can be said to be a minimum unit of a region where the alignment direction of the liquid crystal 15 changes in accordance with voltage application.
[0021]
In FIG. 1 again, the light shielding layer 111 is formed in a lattice shape so as to cover the gap between the sub-pixels arranged in a matrix (that is, a region other than the region where the common electrode 114 and the segment electrode 122 face each other). It plays a role of shielding light around the sub-pixel. The light shielding layer 111 is formed on the first substrate 11 using, for example, a metal such as chromium or a black resin material in which carbon black is dispersed. The color filter 112 is a resin layer formed corresponding to each sub-pixel, and is colored in one of R (red), G (green), and B (blue) with a dye or pigment. Therefore, only light having a wavelength corresponding to the color of each color filter 112 out of the light transmitted through the liquid crystal 15 toward the first substrate 11 is emitted to the observation side. In the present embodiment, as illustrated in parentheses in FIG. 2, a case where a configuration (so-called stripe arrangement) in which color filters 112 of the same color are arranged over a plurality of sub-pixels arranged in the Y direction is exemplified. .
[0022]
The overcoat layer 113 is formed of, for example, an acrylic or epoxy resin material, and plays a role of flattening the steps of the light shielding layer 111 and the color filter 112. The common electrode 114 described above is formed on the surface of the overcoat layer 113. Furthermore, the surface of the overcoat layer 113 on which the common electrode 114 is formed is covered with an alignment film 115 similar to the alignment film 123 described above.
[0023]
Next, a specific planar shape of the reflective layer 121 will be described in detail with reference to FIG. In FIG. 3, only the reflective layer 121 and the light shielding layer 111 are illustrated in order to prevent the drawing from becoming complicated, and the other components are not illustrated.
[0024]
As described above, the light shielding layer 111 has a shape that opens corresponding to the sub-pixel corresponding to the intersection of the common electrode 114 and the segment electrode 122. As shown in FIG. 3, the reflective layer 121 is formed so as to cover a partial region of the sub-pixel. As a result, the region 17 </ b> A where the reflective layer 121 is formed corresponding to a part of the sub-pixel (hereinafter referred to as “reflective region”) 17 </ b> A reflects the light from the first substrate 11 side to display the reflective display. It functions as an area for performing. That is, when performing a reflective display, external light such as sunlight and room illumination light incident on the liquid crystal display panel 1 from the observation side passes through the polarizing plate 117 and the phase difference plate 116 to be in a predetermined polarization state. After that, the first layer 11 → the color filter 112 → the common electrode 114 → the liquid crystal 15 → the segment electrode 122 is reached through the path to the reflection layer 121, and the reflection area 17A is reflected to reverse the path that has just come. follow. At this time, since the alignment state of the liquid crystal 15 changes according to the voltage difference between the common electrode 114 and the segment electrode 122, the reflected light in the reflection region 17A passes through the polarizing plate 117 and is visually recognized by the observer. The amount of light is controlled for each sub-pixel.
[0025]
On the other hand, the region other than the reflective region 17A among the sub-pixels, that is, the region other than the region covered by the reflective layer 121 among the sub-pixels (hereinafter referred to as “translucent region”) 17B It functions as an area for transmitting light incident on the two substrates 12 and performing transmissive display. That is, when transmissive display is performed by turning on the light source 21 of the backlight unit 2, the irradiation light of the backlight unit 2 becomes a predetermined polarization state by passing through the polarizing plate 125 and the phase difference plate 124. Thereafter, the light is emitted to the observation side through a path of the second substrate 12 → the light transmitting region 17 </ b> B → the segment electrode 122 → the liquid crystal 15 → the common electrode 114 → the color filter 112 → the first substrate 11. Also in this transmissive display, since the alignment state of the liquid crystal 15 changes according to the voltage difference between the common electrode 114 and the segment electrode 122, the light transmitted through the light transmitting region 17B passes through the polarizing plate 117. The amount of light visually recognized by the observer is controlled for each sub-pixel.
[0026]
In the present embodiment, each of the four sides that define the region corresponding to the sub-pixel (that is, the four sides that define the opening region of the light shielding layer 111) is formed by the reflective region 17A and the light-transmitting region 17B. The shape of the reflective layer 121 is selected so as to be adjacent to each other. For example, in FIG. 3, when each of the four sides of the sub-pixel is traced from one end to the other end of the sub-pixel, the translucent region 17B, the reflective region 17A, and the translucent region 17B are along the side. Each region will be adjacent in order. In other words, as shown in FIG. 3, when a straight line L that is close to each side of the sub-pixel and is parallel to the side is assumed in the sub-pixel, the straight line L is reflected in the reflection region 17A and the light-transmitting region 17B. It is designed to pass through both of them.
[0027]
Furthermore, in the present embodiment, the shape of the reflective layer 121 is selected so that the lengths along the sides of the reflective region 17A and the translucent region 17B adjacent to each side of the sub-pixel are substantially equal. ing. More specifically, as shown in FIG. 3, the length La1 of the reflective region 17A along the side extending in the Y direction among the sub-pixels and the length La2 of the translucent region 17B along the side ( = La2 ′ + La2 ″).
[0028]
As described above, in the present embodiment, the reflective region 17A and the translucent region 17B are adjacent to each other along the peripheral edge of the subpixel in one subpixel. It is possible to prevent variations due to manufacturing errors in the area ratio between 17A and the light-transmitting region 17B. The details are as follows.
[0029]
As a configuration for providing the reflection region and the light transmission region in one subpixel, for example, the configuration shown in FIG. That is, the translucent area 17B ′ is an area along two sides extending in the Y direction among the sub-pixels, and the reflective area 17A ′ is an area sandwiched between the translucent areas 17B ′. . In FIG. 4 and FIG. 5 to be described later, a region that should function as a subpixel in design is shown as a region 18 surrounded by a broken line. That is, the region 18 is a region designed in the design as a region where the common electrode 114 and the segment electrode 122 should face each other in the substrate surface. However, since the common electrode 114, the reflective layer 121, and the segment electrode 122 can be formed with extremely high accuracy by a technique such as photolithography or etching, the region where the common electrode 114 and the segment electrode 122 actually face each other is considered as the region 18. It can be said that there is no problem.
[0030]
Here, among the steps of manufacturing the liquid crystal display panel 1 having such a configuration, attention is focused on the step of bonding the second substrate 12 on which the reflective layer 121 is formed and the first substrate 11 on which the light shielding layer 111 is formed. In this step, the substrates are generally bonded together while relatively aligning the substrates. At this time, if it is assumed that the relative positions of the two substrates in the X direction have shifted due to, for example, manufacturing technology, as shown in FIG. The light region 17B ′ (more specifically, the left light transmitting region 17B ′ in FIG. 4) is covered with the light shielding layer 111. Therefore, the light-transmitting region 17B ′ in the region 18 that should originally function as a subpixel cannot contribute to display. That is, the area of the translucent region 17B ′ occupying the sub-pixel is smaller than when the light shielding layer 111 is appropriately arranged (that is, in the case of FIG. 4A). On the other hand, even when such a position shift of the substrate occurs, the reflection region 17A ′ is not covered by the light shielding layer 111. That is, the area of the reflection region 17A ′ occupying the sub-pixel is not different from the case shown in FIG. As described above, in the configuration shown in FIG. 4, the area of the light transmitting region 17B ′ is reduced due to the bonding error of the substrates, but the area of the reflective region 17A ′ is not changed. The brightness varies depending on the display method, for example, the brightness becomes darker than that of the reflective display.
[0031]
On the other hand, in the present embodiment, the reflective region 17A and the translucent region 17B are adjacent to each other along a plurality of sides that define one subpixel. Therefore, when the relative positions of the first substrate 11 and the second substrate 12 are shifted in the X direction when viewed from the appropriate position (designed position) shown in FIG. As described above, the area of the reflection region 17A decreases with the area of the light transmission region 17B. That is, according to the present embodiment, even if the relative positions of the reflective layer 121 and the light shielding layer 111 are shifted, only the area of either the light transmitting region 17B or the reflective region 17A is reduced. Therefore, it is possible to suppress a difference in display quality between the transmissive display and the reflective display.
[0032]
Furthermore, in the present embodiment, the lengths along the one side of the reflective region 17A and the light-transmitting region 17B adjacent along the one side of the subpixel are substantially equal. For this reason, when the relative positions of the reflective layer 121 and the light shielding layer 111 are shifted, the areas in which the reflective region 17A and the translucent region 17B decrease can be made approximately equal. Therefore, according to the present embodiment, it is possible to more reliably suppress a difference in display quality between the transmissive display and the reflective display.
[0033]
<B: Modification>
Although one embodiment of the present invention has been described above, the above embodiment is merely an example, and various modifications can be made to the above embodiment without departing from the spirit of the present invention. Hereinafter, modified examples of the present invention will be described with reference to FIGS. 6 to 8 that are the same as those shown in FIG. 1 are given the same reference numerals.
[0034]
<B-1: Modification 1>
In the above embodiment, the liquid crystal display panel including the color filter 112 has been exemplified. However, the present invention can be applied to a liquid crystal display panel that does not include the color filter 112 and performs monochrome display. In this case, a region where the common electrode 114 on the first substrate 11 and the segment electrode 122 on the second substrate 12 intersect (that is, the sub-pixel in the above embodiment) is a pixel, and the reflective region 17A and the transparent region are included in the pixel. What is necessary is just to set it as the structure in which the optical area | region 17B is formed. That is, the “pixel” in the present invention is a region where the electrode on the first substrate 11 and the electrode on the second substrate 12 intersect (that is, a region where the alignment direction of the liquid crystal is controlled by the voltage difference between the two electrodes. This is a concept including the “sub-pixel” in the above embodiment.
[0035]
<B-2: Modification 2>
In the above embodiment, the configuration in which the segment electrodes 122 are formed on the surface of the reflective layer 121 to electrically connect them is exemplified, but the configuration shown in FIG. That is, as shown in the figure, in the liquid crystal display panel according to this modification, an insulating layer 126 made of, for example, a resin material is formed so as to cover the surface of the second substrate 12 on which the reflective layer 121 is formed. In addition, a segment electrode 122 is formed on the surface of the insulating layer 126. In the above-described embodiment, since the reflective layer 121 and the segment electrode 122 are electrically connected, the shape of the reflective layer 121 is separated from each other at each portion corresponding to each segment electrode 122. On the other hand, in the present modification, the reflective layer 121 and the segment electrode 122 are electrically separated, so that it is not necessary to separate the reflective layer 121 for each portion corresponding to each segment electrode 122. That is, as shown in FIG. 7, the reflective layer 121 may have a shape in which portions corresponding to each of the plurality of sub-pixels are connected. As described above, the present invention can be applied regardless of whether the reflective layer 121 is separated for each of one or more pixels (sub-pixels) or is continuous over a plurality of pixels.
[0036]
In the above embodiment, as shown in FIG. 2, the reflection region 17A is formed from the center of the subpixel to the center of each side, and the light transmission regions 17B are formed near the four corners of the subpixel. Although the shape of the reflective layer 121 is selected so as to be formed, the positional relationship between the reflective region 17A and the light transmitting region 17B may be reversed. That is, the shape of the reflective layer 121 is selected so that the translucent region 17B is formed from the center of the subpixel to the center of each side, and the reflective regions 17A are formed near the four corners of the subpixel. May be.
[0037]
Thus, the shape of the reflective layer according to the present invention is not limited to the shape shown in the above embodiment. In short, it is only necessary that the shape of the reflective layer 121 is selected so that the reflective region 17A and the light-transmitting region 17B are adjacent to each other along each of a plurality of sides that define a pixel (sub-pixel in the above embodiment). It is.
[0038]
<B-3: Modification 3>
In the above-described embodiment and each modification, the light shielding layer 111 and the color filter 112 are provided on the first substrate 11. However, as illustrated in FIG. 8, these elements may be provided on the second substrate 12. More specifically, the color filter 112 and the light shielding layer 111 and the overcoat layer 113 covering the color filter 112 and the light shielding layer 111 are formed on the surface of the second substrate 12 on which the reflective layer 121 is formed. Then, the segment electrode 122 is formed on the surface of the overcoat layer 113. On the other hand, a common electrode 114 and an alignment film 115 are formed on the surface of the first substrate 11. Even in such a configuration, it is possible to suppress a difference in the area ratio between the reflective region 17A and the light-transmitting region 17B due to an error in forming the light shielding layer 111 on the second substrate 12. The same effect as the above embodiment can be obtained.
[0039]
However, since the light shielding layer 111 and the color filter 112 can generally be formed with relatively high accuracy using photolithography, etching, or the like, compared with the case where the light shielding layer 111 is formed on the first substrate 11. Thus, it is considered that a situation in which a relative position shift between the reflective layer 121 and the light shielding layer 111 is unlikely to occur. In consideration of such circumstances, the effect of the present invention that suppresses the difference in the area ratio between the reflective region 17A and the light transmitting region 17B is particularly remarkable when the light shielding layer 111 (and the color filter 112) is formed on the first substrate 11. It can be said that it appears in
[0040]
In the above embodiment, the light shielding layer 111 is provided on the first substrate 11, and variation in the area ratio between the reflective region 17 </ b> A and the light transmitting region 17 </ b> B due to the displacement of the light shielding layer 111 is suppressed. In the present invention, the light shielding layer 111 is not always necessary. That is, not only due to the deviation of the light shielding layer 111 but also when other sub-pixels cannot function as original pixels due to various other causes that may occur in the manufacturing technology (for example, other than the light shielding layer 111). In the present invention, the area ratio between the reflective region 17A and the translucent region 17B can be kept constant even when the above element overlaps the sub-pixel or when the relative positions of the electrodes on both substrates are shifted. Can keep.
[0041]
<B-4: Modification 4>
In the above embodiment and each modified example, a passive matrix type liquid crystal display panel is exemplified, but a two-terminal switching element represented by TFD (Thin Film Diode) and three represented by TFT (Thin Film Transistor). The present invention can also be applied to an active matrix liquid crystal display panel that employs terminal-type switching elements.
[0042]
<C: Electronic equipment>
Next, electronic devices using the liquid crystal display panel according to the present invention will be described.
[0043]
<C-1: Mobile computer>
First, an example in which the liquid crystal display panel according to the present invention is applied to a display unit of a portable personal computer (so-called notebook personal computer) will be described. FIG. 9 is a perspective view showing the configuration of this personal computer. As shown in the figure, the personal computer 5 includes a main body 52 having a keyboard 51 and a display 53 to which the liquid crystal display panel according to the present invention is applied.
[0044]
<C-2: Mobile phone>
Next, an example in which the liquid crystal display panel according to the present invention is applied to a display unit of a mobile phone will be described. FIG. 10 is a perspective view showing the configuration of the mobile phone. As shown in the figure, the cellular phone 6 includes a plurality of operation buttons 61, a receiving mouth 62, a mouthpiece 63, and a display unit 64 to which the liquid crystal display panel according to the present invention is applied.
[0045]
In addition to the personal computer shown in FIG. 9 and the mobile phone shown in FIG. 10, electronic devices to which the liquid crystal display panel according to the present invention can be applied include a liquid crystal television, a viewfinder type and a monitor direct view type. Examples include a video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, a word processor, a workstation, a video phone, a POS terminal, and a digital still camera.
[0046]
【The invention's effect】
As described above, according to the present invention, it is possible to suppress variation in the area ratio between the light-transmitting region and the reflecting region due to manufacturing errors.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a liquid crystal display device according to an embodiment of the present invention.
FIG. 2 is a plan view showing a relationship between a reflective layer, a common electrode, and a segment electrode in the liquid crystal display panel according to the embodiment.
FIG. 3 is a plan view showing the relationship between a reflective layer and a light shielding layer in the liquid crystal display panel.
FIG. 4 is a plan view showing the proportionality for explaining the effect of the liquid crystal display panel.
FIG. 5 is a plan view for explaining the effect of the liquid crystal display panel.
FIG. 6 is a cross-sectional view showing a configuration of a liquid crystal display panel according to a modification of the present invention.
FIG. 7 is a plan view showing a relationship between a reflective layer, a common electrode, and a segment electrode in the liquid crystal display panel.
FIG. 8 is a cross-sectional view showing a configuration of a liquid crystal display panel according to a modification of the present invention.
FIG. 9 is a perspective view showing a configuration of a personal computer as an example of an electronic apparatus to which the liquid crystal display panel according to the present invention is applied.
FIG. 10 is a perspective view showing a configuration of a mobile phone as an example of an electronic apparatus to which the liquid crystal display panel according to the present invention is applied.
[Explanation of symbols]
1 ... LCD panel
11 …… First substrate
111 …… Light-shielding layer
112 …… Color filter
114 …… Common electrode
12 …… Second substrate
121 …… Reflective layer
122 …… Segment electrode
15 ... LCD
17A …… Reflection area
17B …… Translucent area
2. Backlight unit
5 ... Personal computer (electronic equipment)
6 …… Mobile phone (electronic equipment).

Claims (6)

A liquid crystal display panel comprising a first substrate and a second substrate that sandwich a liquid crystal opposite to each other, and a reflective layer provided on the second substrate,
A reflection region that reflects incident light from the first substrate side corresponding to the reflection layer, and a light transmission that transmits light from the second substrate toward the first substrate corresponding to a region other than the reflection layer The shape of the reflective layer is selected such that the region is adjacent to each other along each of a plurality of sides defining the pixel in the pixel , and the reflective layer extends over the plurality of pixels forming a column. A liquid crystal display panel having an extended shape . The liquid crystal display panel according to claim 1, further comprising: a light shielding layer provided on a surface of the first substrate and shielding light around the pixels. The color filter which is provided on the surface of the first substrate corresponding to the pixel and transmits light having a wavelength corresponding to one of a plurality of colors is provided. LCD display panel.   The shape of the reflective layer is selected so that the length along each of a plurality of sides that define a region corresponding to the pixel is substantially equal among the reflective region and the light-transmitting region. The liquid crystal display panel according to claim 1. The liquid crystal display panel according to claim 1 , further comprising an electrode that is provided on a surface of the reflective layer and is electrically connected to the reflective layer to apply a voltage to the liquid crystal.   An electronic apparatus comprising the liquid crystal display panel according to claim 1.

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