JP5026899B2 - Liquid crystal display - Google Patents

Description

  The present invention relates to a liquid crystal display device.

  Unlike self-luminous displays such as CRT (Cathode Ray Tube) and PDP (Plasma Display Panel), liquid crystal display devices are non-luminous displays that display images by adjusting the amount of transmitted light. is there. A liquid crystal display (LCD) has features such as thinness, light weight, and low power consumption.

  A liquid crystal display device has a light source (referred to as a backlight) on the back and displays a picture by adjusting the amount of light transmitted through the backlight, as well as outside light such as room lighting and sunlight. There is a reflection type liquid crystal display device that displays an image by allowing external light to enter from the front side of the display and adjusting the amount of reflected light. In addition, there is a liquid crystal display device (hereinafter referred to as a transflective liquid crystal display device) that can be used as a reflective display device in a bright environment and a transmissive display device in a dark environment. The transflective liquid crystal display device has both reflective and transmissive display functions, and can reduce power consumption by turning off the backlight in a bright environment. In a dark environment, it can be visually recognized by turning on the backlight. That is, it is suitable for a liquid crystal display device of a portable device such as a mobile phone or a digital camera that is assumed to be used in various lighting environments.

  As for the transflective liquid crystal display device, as described in Patent Document 1, it is necessary to arrange a transmission region and a reflection region independently in a pixel and to design each retardation optimally. This is achieved by providing a step in the reflective region of each pixel and making the thickness of the liquid crystal layer in the reflective region approximately half the thickness of the liquid crystal layer in the transmissive region. Further, a reflection plate made of metal or the like is disposed in the reflection area of each pixel.

  Further, as described in Patent Document 2, for the transmissive liquid crystal display device, productivity is improved by sharing the common wiring and the signal electrode in two pixels adjacent in the direction along the signal wiring. Yield improvement is realized.

JP 2000-187220 A JP-A-8-254712

  In the transflective liquid crystal display device, a black matrix or the like is provided between the reflective portion and the transmissive portion in order to block light leakage from two pixels adjacent in the direction along the signal wiring. A high aperture ratio cannot be obtained. Further, the transmissive liquid crystal display device has a problem that the display quality deteriorates when external light is incident from the front side of the display.

  An object of the present invention is to provide a transflective liquid crystal display device having a high aperture ratio and high image quality.

  In order to solve the above-described problems, the present invention includes a liquid crystal layer disposed between a first substrate and a second substrate, a reflective portion, and a transmissive portion, and includes a plurality of scanning wirings, a plurality of scanning wirings, A plurality of pixels surrounded by a plurality of signal wirings formed in an intersecting manner, and a reflection portion having a reflection plate, and two pixels adjacent in the direction along the plurality of signal wirings reflect on the scanning wiring. The positional relationship of the parts is symmetric, and the reflector is shared by two adjacent pixels.

  A transflective liquid crystal display device with high aperture ratio and high image quality can be realized.

  Each embodiment will be described below with reference to the drawings.

  The configuration of this embodiment will be described with reference to FIGS.

  FIG. 1 is a schematic cross-sectional view of the liquid crystal display device of this embodiment. The liquid crystal display device includes a pair of polarizing plates 32, a liquid crystal cell 33, and a backlight unit 34.

  The polarizing plate 32 is composed of a PVA (Poly Vinyl Alcohol) layer that has been adsorbed with iodine and stretched, and a protective film that protects it.

  The backlight unit 34 includes an LED that is a light source, a light guide plate, a diffusion plate, and the like. The LED is preferably white, but RGB three-color LEDs can also be used. The backlight unit 34 only needs to be able to illuminate the liquid crystal cell 33 from the back surface, and the light source and structure are not limited thereto. For example, even when CCFL or EEFL is used as the light source, the effect of the present invention can be obtained.

  FIG. 2 shows a cross-sectional view of a planar structure of a liquid crystal cell 33 having a reflective portion and a transmissive portion in one pixel. FIG. 3 is a schematic cross-sectional view taken along the line AA ′ in FIG. 2 and shows a reflection portion in one pixel. The liquid crystal cell 33 is constituted by a liquid crystal layer 31 sandwiched between the first substrate 13 and the second substrate 23.

The liquid crystal layer 31 is composed of a liquid crystal composition exhibiting positive dielectric anisotropy in which the dielectric constant in the major axis direction of liquid crystal molecules is larger than that in the minor axis direction. As the liquid crystal material of the liquid crystal layer 31, a material showing a nematic phase in a wide range including a room temperature region is used. The liquid crystal alignment is desirably a homogeneous alignment. Further, under the driving conditions using TFTs, for example, with a resolution of QVGA (240 lines) and a driving frequency of 60 Hz, the transmittance is sufficiently maintained during the holding period and exhibits a high resistivity enough not to cause flicker. use. That is, the resistivity of the liquid crystal layer 31 is desirably 10 ¹² Ωcm ² or more, and particularly desirably 10 ¹³ Ωcm ² or more. In this embodiment, a positive dielectric anisotropy material is specifically described, but the same effect can be obtained even when a negative dielectric anisotropy material is used. However, in that case, it is necessary to devise the orientation direction of the liquid crystal layer 31. The retardation of the liquid crystal layer 31 is preferably λ / 2 at the transmission portion and λ / 4 at the reflection portion (λ is the wavelength of light), but in order to improve the efficiency of the bright state, λ / 2, respectively. A larger value than λ / 4 is more desirable.

  The first substrate 13 shown in FIG. 3 has an alignment film 17 disposed on the outermost surface on the liquid crystal layer side. Further, the color filter 24 is disposed on the liquid crystal layer side of the first substrate 13, and the black matrix 21 is disposed between two adjacent pixels or between a reflection portion and a transmission portion in one pixel. A planarizing layer 28 is disposed on the liquid crystal layer side of the color filter 24. Further, a built-in retardation plate 25, a protective film 27, and a step portion 26 for adjusting the gap are arranged on the liquid crystal layer side of the planarizing layer 28 in the reflection portion.

  In the second substrate 23 shown in FIG. 3, the alignment film 17, the pixel electrode 12, and the common electrode 22 are disposed on the outermost surface on the liquid crystal layer side. Further, an insulating film 14 a is disposed between the second substrate 23 and the source electrode 15, an insulating layer 14 b is disposed between the signal wiring 11 and the common electrode 22, and an insulating film 14 c is disposed between the pixel electrode 12 and the common electrode 22. The A thin film transistor (hereinafter referred to as TFT) 19 is disposed to control the voltage applied to each pixel, and a contact hole 18 is disposed to contact the TFT 19 with the source electrode 15 and each pixel electrode 12. In addition, the reflecting plate 16 is disposed at a position in contact with the common electrode 22 in the reflecting portion. The reflector 16 may be disposed on the second substrate 23 side with respect to the common electrode 22.

  The first substrate 13 and the second substrate 23 are transparent to transmit light, and for example, glass or a polymer film can be used. The polymer film is particularly preferably plastic or polyethersulfone (hereinafter referred to as PES). However, since plastic and PES allow air to pass through, it is necessary to form a gas barrier on the substrate surface. The gas barrier is preferably formed of a silicon nitride film.

  The pixel electrode 12 and the common electrode 22 are arranged to apply an electric field to the liquid crystal layer 31. The pixel electrode 12 is made of a transparent conductive material, and for example, ITO or ZnO is desirable.

  The insulating films 14a, 14b, and 14c are provided for electrical insulation and may be any material as long as they have a function of electrical insulation, for example, an organic film or an inorganic film such as a nitride film. It doesn't matter.

  The reflection plate 16 is provided to reflect external light incident from the first substrate 13 side. The reflecting plate 16 has irregularities in order to diffuse incident external light. Although this unevenness may be provided only on the reflector 16, in this embodiment, as shown in FIG. 3, the insulating film 14 b is made uneven, thereby making the reflector 16 uneven. Moreover, since the reflecting plate 16 is connected to the common electrode 22, it can also serve as a common electrode for the reflecting portion. The reflecting plate 16 is made of a metal having high conductivity. In particular, the reflecting plate 16 is preferably made of silver, aluminum, or the like, which has high reflectivity in the visible region and excellent conductivity.

  The alignment film 17 has a function of horizontally aligning liquid crystal molecules on the substrate surface. The alignment film 17 is preferably a polyimide organic film.

  The black matrix 21 is disposed to block light leakage from two adjacent pixels, light leakage due to the tapered portion of the step portion 26 disposed in the reflection portion, and the like. The material used for the black matrix 21 can be an opaque material such as metal, and is preferably chromium, tantalum-molybdenum, tantalum, aluminum, copper, or the like.

  Here, FIG. 4 illustrates how the black matrix 21 is arranged in the pixel of this embodiment. In FIG. 4A, in order to block light leakage and the like, the black matrix 21 is necessary between the pixels of the reflective portion and the transmissive portion between two adjacent pixels, but in FIG. 4B, In two pixels adjacent in the direction along the signal wiring, the reflecting plate and the stepped portion are common to the adjacent pixels, so that no light leaks at the boundary of the reflecting portion during black display. Therefore, the black matrix 21 is not necessary at the boundary of the reflection portion, and the use of the black matrix 21 can be reduced as a whole. Thereby, the aperture ratio is improved as compared with the pixel configuration of FIG.

  The color filter 24 arranges a red region, a green region, and a blue region through which any one of red, green, and blue light is transmitted for each pixel. For example, such an arrangement includes a stripe arrangement and a delta arrangement. The color filter 24 is preferably made of a color resist or the like. The built-in retardation plate 25 is arranged to bring the optical characteristics of the reflective display closer to the optical characteristics of the transmissive display. Since the built-in retardation plate 25 is made of a liquid crystal polymer, the orientation of molecules is higher than that of a retardation plate produced by stretching an organic polymer film, and the orientation is comparable to that of the liquid crystal layer 31. For this reason, the refractive index anisotropy Δn of the liquid crystal in the built-in retardation plate 25 is much larger than that of the external retardation plate, and the same or similar to that of the liquid crystal layer 31 if the molecular structure and manufacturing conditions are appropriately adjusted. This can be done. The layer thickness of the external retardation plate is several tens of μm, which is nearly 10 times the liquid crystal layer thickness. However, if the liquid crystal polymer is used, the layer thickness of the built-in retardation plate 25 can be significantly reduced. Therefore, compared with the conventional method using an external retardation plate, the thickness of the liquid crystal panel can be made substantially current.

  The built-in retardation plate 25 rubs the substrate coated with the alignment film. A diacrylic liquid crystal mixture is dissolved in an organic solvent together with a photoreaction initiator, and applied by means such as spin coating or printing. Although it is in a solution state immediately after coating, it is aligned along the alignment direction of the retardation layer alignment film while evaporating the solvent. This is irradiated with ultraviolet rays to polymerize the acrylic groups at the molecular ends.

  At this time, oxygen becomes an inhibitory factor for the polymerization reaction, but if the concentration of the photoinitiator is sufficient, the photoreaction proceeds at a sufficiently high rate. If it is necessary to pattern the built-in retardation plate here, the part to be patterned using a mask or the like is not irradiated with light, but developed with an organic solvent, so that the built-in retardation plate is applied only where necessary. Can be arranged.

  As described above, the retardation layer is formed by solidifying while maintaining the alignment state in the liquid crystal layer roughly. Thereafter, the retardation layer is overheated in each process of protective film formation and alignment film formation. Although the phase difference value decreases when placed in a high temperature state, the current value of the phase difference value is approximately proportional to the length of time spent in the high temperature state if the temperature in the high temperature state is constant. Thus, an initial phase difference value may be set. The retardation value of the built-in retardation plate used in the present embodiment is preferably approximately λ / 4, but the appropriate value of the retardation value of the built-in retardation plate varies depending on the retardation value of the liquid crystal layer 31 of the reflecting portion. Usually, since the phase difference of the liquid crystal layer 31 of the reflecting portion is larger than λ / 4, it is desirable that the retardation value of the built-in retardation plate is also larger than λ / 4.

  The step portion 26 is disposed in order to make the optical responses of the reflection portion and the transmission portion substantially coincide with each other. The step portion 26 is preferably made of a resist material or the like.

  The protective film 27 is disposed to protect the liquid crystal layer 31 so that the built-in retardation plate 25 does not leak into the liquid crystal layer 31. The protective film 27 is preferably made of the same acrylic resin as that of the planarizing layer 28.

  The flattening layer 28 is provided in order to flatten the unevenness generated when the color filter is manufactured. The planarizing layer 28 is preferably made of an acrylic resin or the like.

  FIG. 5 is a schematic cross-sectional view on the TFT 19 between BB ′ in FIG. The TFT 19 has an inverted staggered structure and has a semiconductor layer 20 in its channel portion, but the same effect can be obtained even in a staggered structure.

  A voltage signal for controlling the liquid crystal layer 31 is applied to the signal wiring 11, and a signal for controlling the TFT 19 is applied to the scanning wiring 10. The source electrode 15 is connected to the pixel electrode 12 through a contact hole 18. The material of the signal wiring 11, the scanning wiring 10, and the source electrode 15 is preferably a low-resistance conductive material, for example, chromium, tantalum-molybdenum, tantalum, aluminum, copper, or the like.

  FIG. 6 is a schematic cross-sectional view taken along the line C-C ′ in FIG. 2, and is a cross-sectional view of a portion straddling the reflective portion and the transmissive portion in one pixel.

  FIG. 7 is a schematic cross-sectional view taken along the line D-D ′ in FIG. 2, and the reflector 16 is shared by two pixels adjacent in the direction along the signal wiring. In addition, the dotted line in a figure represents the boundary line of two adjacent pixels.

  In the present embodiment, in the two pixels adjacent in the direction along the signal wiring, the positional relationship between the reflection portions of the two adjacent pixels is symmetrical with respect to the scanning wiring 10 formed between the two adjacent pixels. The reflection plate 16 is shared by two pixels adjacent in the direction along the signal wiring 11. Thereby, the joint of the reflecting plate 16 is reduced at the boundary between two adjacent pixels, the luminance and the yield are improved, and the production process is simplified.

  Further, since the stepped portion 26 is shared by two adjacent pixels in the direction along the signal wiring 11, a portion etched with acrylic resin or the like in the stepped portion 26, which causes a reduction in display quality, is obtained. The black matrix to be hidden becomes unnecessary, and the aperture ratio and display quality are improved.

  In this embodiment, the method using the built-in retardation plate 25 is described as an example of a method for achieving semi-transmission, but any method may be used as long as semi-transmission can be achieved.

  In FIG. 2, the comb-like electrodes are arranged in the direction parallel to the signal wiring 11. However, as shown in FIG. 8, the comb-like electrodes are arranged in the direction perpendicular to the signal wiring 11. It doesn't matter. FIG. 9 is a schematic cross-sectional view taken along line EE ′ of two adjacent pixels shown in FIG. 8, and the pixel electrodes 12 are arranged in a comb shape.

  Further, as shown in FIG. 10, even if the comb-like electrode of the pixel electrode 12 is refracted so as to have a multi-domain orientation in order to improve the viewing angle characteristics, the same effect of the present invention can be obtained. .

  As in the first embodiment, the present embodiment is characterized in that the reflecting plates of the reflecting portions of two pixels adjacent in the direction along the signal wiring are common. Only the differences from the first embodiment will be described with reference to FIG.

  FIG. 11 is a diagram schematically showing the pixel electrode 12 in the reflection portion of two pixels adjacent in the direction along the signal wiring. In the shape as shown in FIG. 2 shown in the first embodiment, there is a gap between the reflection part A and the reflection part B (FIG. 11A).

  On the other hand, in the pixel shape in this embodiment (FIGS. 11B and 11C), the reflection part A and the reflection part B are located at the boundary between the reflection parts of two pixels adjacent in the direction along the signal wiring. There is no gap between them. Thereby, an aperture ratio improves. Here, the planar shape of the comb-shaped electrode may be an acute angle at the tip of the comb-shaped electrode. Further, when only the reflection part A is in the bright state or only the reflection part B is in the bright state, the influence of the electric field is exerted on the other reflection part, and light leakage may occur. However, in the case of the configuration as in this embodiment, since the pixels are the same color, the display quality is not deteriorated even if light leakage occurs. Here, the color filter between the pixels may be removed to display white.

  As in the first embodiment, the present embodiment is characterized in that the reflecting plates of the reflecting portions of two pixels adjacent in the direction along the signal wiring are common. The difference is that the liquid crystal driving method is a vertical electric field method. That is, the common electrode is disposed between the first substrate and the liquid crystal layer, and the pixel electrode is disposed between the second substrate and the liquid crystal layer.

  Only the differences from the first embodiment will be described with reference to FIGS. FIG. 12 shows a schematic plan view of the liquid crystal display device of this embodiment. FIG. 13 is a schematic cross-sectional view of the reflection part between FF ′ in FIG. 12, and the common electrode 22 is disposed between the first substrate 13 and the liquid crystal layer 31. In addition, an insulating film 14 c is disposed between the reflecting plate 16 and the pixel electrode 12. The pixel electrode 12 is arranged in a solid shape for each pixel.

  In order to achieve semi-transmission, the liquid crystal layer 31 and the retardation plate 25 need to be designed. For example, the phase difference value of the liquid crystal layer 31 is λ / 2 at the transmission part and λ / 4 at the reflection part, and an approximately λ / 4 plate is disposed between the liquid crystal cell and the upper and lower polarizing plates as an external retardation plate. Can be achieved. Here, the alignment of the liquid crystal is homogeneous, but the present embodiment can also be applied to a TN-oriented transflective LCD. A film for improving the viewing angle of the transflective LCD or a film for improving color shift (for example, a λ / 2 plate) may be used.

  In this embodiment, the ECB method and the TN method are described, but the same effect can be obtained with the VA method. An example of the VA method will be described with reference to FIG.

  In the case of the VA system, the initial orientation is perpendicular to the substrate. The liquid crystal material used is composed of a liquid crystal composition exhibiting negative dielectric anisotropy having a dielectric constant in the major axis direction smaller than that in the minor axis direction. Therefore, even if an electric field is applied in the direction perpendicular to the substrate, the liquid crystal cannot normally be controlled. For this purpose, for example, as shown in FIG. 14, it is desirable to arrange the alignment control protrusion 29 near the center of the sub-pixel.

  The alignment control protrusions 29 are arranged to define the direction of liquid crystal molecules that fall when an electric field is applied. It is necessary to define the direction in which the liquid crystal molecules are vertically aligned depending on the voltage. Here, the protrusion is used as an example, but the present invention is not limited to this, and an electrode slit or the like may be used. In the peripheral portion of the alignment control protrusion 29, the alignment direction of the liquid crystal molecules in the liquid crystal layer 31 is inclined with respect to the substrate normal direction according to the inclination of the edge of the alignment control protrusion 29. The alignment control projection 29 is formed of an acrylic resin or the like. This acrylic resin can form protrusions by photoetching. The alignment control protrusions 29 and slits may be arranged either between the first substrate 13 and the liquid crystal layer 31 or between the second substrate 23 and the liquid crystal layer 31, but depending on the arrangement location. In this case, disclination occurs in the liquid crystal alignment, and the transmittance or reflectance may decrease.

  By adopting the configuration as described above, even in a longitudinal electric field type (ECB, TN or VA type) transflective LCD, the reflection plate of the reflection portion of two pixels adjacent in the direction along the signal wiring, and the gap adjustment By sharing the step portion, the aperture ratio and the display quality can be improved.

  Only changes between the present embodiment and the first to third embodiments will be described with reference to FIG.

  FIG. 15 shows a schematic top view and a schematic side view of two pixels adjacent in the direction along the signal wiring. Only the first substrate 13 and the second substrate 23, the step portion 26 and the spacer 36 are shown. Simplified and described.

  The spacer 36 is provided in order to keep the gap of the liquid crystal layer 31 constant. In the case of a transflective LCD, it is desirable to dispose the spacer 36 in the reflecting portion so as not to deteriorate the transmissive display quality, and it is disposed between the second substrate 23 and the step portion 26. The spacer 36 is made of, for example, an acrylic resin. This acrylic resin can form protrusions by photoetching. The spacer 36 has a substantially columnar shape.

  In the case of FIG. 15A, the spacer 36 is disposed at the approximate center of the reflection portion, but in FIG. 15B, the reflection plate and the gap of the reflection portion of two pixels adjacent in the direction along the signal wiring. A step for adjustment is shared. This makes it possible to arrange a common spacer at the boundary between two adjacent pixels. The boundary between two adjacent pixels is a region where the liquid crystal does not move even when a voltage is applied. Therefore, by arranging a spacer in this portion, it is possible to improve the effective aperture ratio that contributes to the reflectance.

  In the present embodiment, in a transflective LCD using a microlens, a reflecting plate of a reflecting portion and a step portion for gap adjustment in two pixels adjacent in the direction along the signal wiring are shared. In addition, the aperture ratio is improved by arranging the spacer 36 between two adjacent pixels.

  Only the differences between the present embodiment and the first to third embodiments will be described with reference to FIG. This embodiment can simplify the formation of a microlens and improve its effect in a transflective LCD using a microlens.

  FIG. 16 shows a schematic top view and a schematic side view of two pixels adjacent in the direction along the signal wiring. The side view of FIG. 16 describes the second substrate 23, the backlight unit 34, and the lens sheet 37 disposed therebetween. A micro lens 38 is disposed on the lens sheet 37.

  The microlens 38 is a member that can improve the light efficiency. The microlens 38 disposed on the backlight side of the transmissive part improves the light efficiency because the light from the backlight is condensed on the transmissive part in the pixel. The micro lens 38 is formed between the backlight unit 34 and the lens sheet 37. The lens sheet 37 is preferably transparent, particularly PES or the like. The microlens 38 can be formed by using a UV curable resin, a thermal effect resin, or the like and fitting it in a mold.

  The microlens 38 of the transflective LCD has a semispherical shape or a semi-cylindrical shape that is shared in a direction parallel to the gate wiring for each transmissive portion in one pixel. Further, the microlens 38 is arranged for each transmission part in one pixel (FIG. 16A). On the other hand, in FIG. 16B, since the transmissive portions are adjacent in the two adjacent pixels, one microlens 38 can be arranged for the two adjacent pixels. Therefore, the light of the backlight collected by the microlens 38 is increased, so that the light efficiency is improved, and the size of the microlens 38 itself is larger than that in FIG. Will also improve. In addition, although the micro lens in FIG.16 (b) is arrange | positioned at the lens sheet 37 side, the same effect is acquired even if it arrange | positions at the backlight 34 side.

  In the present embodiment, in a transflective LCD using a microlens, a reflecting plate of a reflecting portion and a step portion for gap adjustment in two pixels adjacent in the direction along the signal wiring are shared. Further, by sharing the microlens in the transmission part in two adjacent pixels, the light efficiency and the productivity of the microlens are improved.

1 is a schematic cross-sectional view of a liquid crystal display device according to Example 1. FIG. 1 is a schematic cross-sectional view of a liquid crystal cell according to Example 1. FIG. FIG. 3 is a schematic cross-sectional view taken along line AA ′ shown in FIG. 2. FIG. 3 is a schematic diagram illustrating an arrangement of a black matrix according to the first embodiment. FIG. 3 is a schematic cross-sectional view taken along the line BB ′ illustrated in FIG. 2. It is the cross-sectional schematic between CC 'shown in FIG. FIG. 3 is a schematic cross-sectional view taken along the line DD ′ shown in FIG. 2. 6 is a schematic cross-sectional view of a liquid crystal cell according to another example 1. FIG. It is the cross-sectional schematic between EE 'shown in FIG. 6 is a schematic cross-sectional view of a liquid crystal cell according to another example 1. FIG. 6 is a schematic diagram of a pixel electrode according to Example 2. FIG. 6 is a schematic cross-sectional view of a liquid crystal cell according to Example 3. FIG. It is the cross-sectional schematic between FF 'shown in FIG. 6 is a schematic cross-sectional view of a liquid crystal cell according to Example 3. FIG. FIG. 6 is a schematic view showing the arrangement of spacers according to Example 4. FIG. 6 is a schematic diagram illustrating the arrangement of microlenses according to a fifth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Scan wiring 11 Signal wiring 12 Pixel electrode 13 1st board | substrate 14, 14a, 14b, 14c Insulating film 15 Source electrode 16 Reflector 17 Alignment film 18 Contact hole 19 TFT
20 Semiconductor layer 21 Black matrix 22 Common electrode 23 Second substrate 24 Color filter 25 Built-in retardation plate 26 Stepped portion 27 Protective film 28 Flattening layer 29 Projection 31 for alignment control Liquid crystal layer 32 Polarizing plate 33 Liquid crystal cell 34 Backlight Unit 35 Storage capacity 36 Spacer 37 Lens sheet 38 Micro lens

Claims (15)

A liquid crystal layer sandwiched between a first substrate and a second substrate;
A plurality of pixels having a reflection part and a transmission part and surrounded by a plurality of scanning wirings and a plurality of signal wirings formed intersecting with the plurality of scanning wirings;
A reflector disposed in the reflector;
A black matrix disposed between two adjacent pixels ;
Have
In two adjacent pixels formed in a direction along the plurality of signal wirings, a positional relationship of the reflection portion of the two adjacent pixels with respect to a scanning wiring formed between the two adjacent pixels Is symmetric,
The reflector is shared by the two adjacent pixels formed in a direction along the plurality of signal lines ,
The black matrix, liquid crystal display device, characterized in that the reflector is formed to avoid a between two adjacent pixels before SL that are shared. A liquid crystal layer sandwiched between a first substrate and a second substrate;
A plurality of pixels having a reflection part and a transmission part and surrounded by a plurality of scanning wirings and a plurality of signal wirings formed intersecting with the plurality of scanning wirings;
A pixel electrode and a common electrode disposed between the second substrate and the liquid crystal layer;
A reflector disposed in the reflector and connected to the common electrode;
Black matrix,
Have
In two adjacent pixels formed in a direction along the plurality of signal wirings, a positional relationship of the reflection portion of the two adjacent pixels with respect to a scanning wiring formed between the two adjacent pixels Is symmetric,
The reflector is shared by the two adjacent pixels,
The liquid crystal display device according to claim 1, wherein the black matrix is formed so as to avoid a portion of the common reflector that is at a boundary between the two adjacent pixels. The liquid crystal display device according to claim 2,
The liquid crystal display device, wherein the pixel electrode or the common electrode is a comb-like electrode. A liquid crystal layer sandwiched between a first substrate and a second substrate;
A plurality of pixels having a reflection part and a transmission part and surrounded by a plurality of scanning wirings and a plurality of signal wirings formed intersecting with the plurality of scanning wirings;
A reflector disposed in the reflector;
A common electrode disposed between the first substrate and the liquid crystal layer;
A pixel electrode disposed between the second substrate and the liquid crystal layer;
A black matrix disposed between two adjacent pixels ;
Have
In two adjacent pixels formed in a direction along the plurality of signal wirings, a positional relationship of the reflection portion of the two adjacent pixels with respect to a scanning wiring formed between the two adjacent pixels Is symmetric,
The reflector is shared by the two adjacent pixels formed in a direction along the plurality of signal lines ,
The black matrix, liquid crystal display device, characterized in that the reflector is formed to avoid a between two adjacent pixels before SL that are shared. The liquid crystal display device according to any one of claims 1 to 4,
A step portion for adjusting a liquid crystal gap disposed between the first substrate and the liquid crystal layer;
2. The liquid crystal display device according to claim 1, wherein the step portion is shared by the two adjacent pixels. The liquid crystal display device according to claim 2 or 3,
A liquid crystal display device comprising an insulating film between the pixel electrode and the common electrode. The liquid crystal display device according to claim 4.
A liquid crystal display device comprising an insulating film between the pixel electrode and the reflector. The liquid crystal display device according to any one of claims 1 to 4,
A liquid crystal display device, wherein a retardation plate is formed between the first substrate and the liquid crystal layer. The liquid crystal display device according to claim 3.
The comb-like electrode is refracted in the pixel;
A liquid crystal display device, wherein a liquid crystal alignment is multi-domained when a voltage is applied to the pixel electrode. The liquid crystal display device according to claim 3.
A liquid crystal display device, wherein a tip portion of the comb-like electrode is disposed between adjacent comb teeth of the comb-like electrode. The liquid crystal display device according to claim 10.
2. A liquid crystal display device according to claim 1, wherein a planar shape of a tip portion of the comb-like electrode is an acute angle. The liquid crystal display device according to any one of claims 1 to 4,
A liquid crystal display device , wherein a common spacer is disposed between the two adjacent pixels formed in a direction along the plurality of signal lines . The liquid crystal display device according to any one of claims 1 to 4,
A condensing member is disposed on the opposite side of the second substrate from the side on which the liquid crystal layer is disposed,
The liquid crystal display device according to claim 1, wherein the condensing member is shared by the transmissive portions in the two adjacent pixels formed in a direction along the plurality of signal wirings . A liquid crystal layer sandwiched between a first substrate and a second substrate;
A plurality of pixels having a reflection part and a transmission part and surrounded by a plurality of scanning wirings and a plurality of signal wirings formed intersecting with the plurality of scanning wirings;
A pixel electrode and a common electrode disposed between the second substrate and the liquid crystal layer;
A reflector disposed between the pixel electrode and the common electrode and disposed in the reflective portion and connected to the common electrode;
An insulating film disposed between the pixel electrode and the common electrode;
A step part for adjusting a liquid crystal gap disposed between the first substrate and the liquid crystal layer;
A phase difference plate sandwiched between the first substrate and the stepped portion;
Black matrix,
Have
In two adjacent pixels formed in a direction along the plurality of signal wirings, a positional relationship of the reflection portion of the two adjacent pixels with respect to a scanning wiring formed between the two adjacent pixels Is symmetric,
The reflector and the stepped portion are shared by the two adjacent pixels,
The liquid crystal display device according to claim 1, wherein the black matrix is formed so as to avoid a portion of the common reflector that is at a boundary between the two adjacent pixels. A liquid crystal layer sandwiched between a first substrate and a second substrate;
A plurality of pixels having a reflection part and a transmission part and surrounded by a plurality of scanning wirings and a plurality of signal wirings formed intersecting with the plurality of scanning wirings;
A pixel electrode disposed between the second substrate and the liquid crystal layer;
A reflector disposed between the second substrate and the pixel electrode and disposed in the reflector;
A step part for adjusting a liquid crystal gap disposed between the first substrate and the liquid crystal layer;
A common electrode disposed between the liquid crystal layer and the stepped portion;
A black matrix disposed between two adjacent pixels ;
Have
In two adjacent pixels formed in a direction along the plurality of signal wirings, a positional relationship of the reflection portion of the two adjacent pixels with respect to a scanning wiring formed between the two adjacent pixels Is symmetric,
The reflector and the stepped portion are shared by the two adjacent pixels formed in a direction along the plurality of signal wirings ,
The black matrix, liquid crystal display device, characterized in that the reflector is formed to avoid a between two adjacent pixels before SL that are shared.

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