Liquid crystal display device
The liquid crystal display device addresses moire and uneven display issues by using a second liquid crystal display panel with strategically arranged light shielding elements and patterns, minimizing dark portion spacing and suppressing moire interference for enhanced visual quality.
Patent Information
- Application Number
- JP2023179973
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-10-19
- Publication Date
- 2025-05-02
AI Technical Summary
Existing liquid crystal display devices with laminated panels suffer from moire interference and uneven display due to the wide spacing of switching elements, which act as light shields, causing noticeable dark areas.
The liquid crystal display device incorporates a first liquid crystal display panel with color main pixels and a second liquid crystal display panel with monochrome main pixels. The second panel features a switching element, light shielding patterns, and light shielding bodies arranged to minimize the distance between dark portions, thus reducing display unevenness. The light shielding patterns, formed from scanning and signal wirings, are designed to suppress moire interference by varying their distance and orientation.
This configuration effectively suppresses moire interference and reduces display unevenness caused by light shielding, resulting in improved visual quality and reduced recognition of dark areas as uneven display.
Smart Images

Figure 2025069982000001_ABST
Abstract
Description
[Technical field]
[0001] The present disclosure relates to a liquid crystal display device. [Background technology]
[0002] There is known a liquid crystal display device having a plurality of stacked liquid crystal display panels. For example, Patent Document 1 discloses a display device including a color display element (color liquid crystal element) and a liquid crystal display panel stacked with the color display element.
[0003] In Patent Document 1, the TFT substrate of the liquid crystal display panel has a plurality of first bus lines extending in a first direction and a plurality of second bus lines extending in a second direction intersecting the first direction. At least one of the plurality of first bus lines and at least one of the plurality of second bus lines overlap with all the sub-pixels of each color included in the color liquid crystal element. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] JP 2023-000275 A Summary of the Invention [Problem to be solved by the invention]
[0005] In Patent Document 1, a first bus line is extended while being bent in a first direction, and a second bus line is extended while being bent in a second direction, so that the first bus line and the second bus line overlap with sub-pixels of all colors of a color liquid crystal element, thereby suppressing the occurrence of moire.
[0006] In the liquid crystal display panel of Patent Document 1, switching elements (thin film transistors) are arranged near the positions where the first bus lines and the second bus lines intersect. Since the area of a display unit (pixel) of the liquid crystal display panel is an integer multiple of the area of a pixel formed of a plurality of sub-pixels of a color display element, the switching elements of the liquid crystal display panel are arranged at wide intervals in the first direction and the second direction, and block light incident on the color liquid crystal element from the backlight (when the color liquid crystal element is located on the observer side) or light emitted from the color liquid crystal element (when the liquid crystal display panel is located on the observer side). If the switching elements block light at wide intervals, the switching elements stand out, and there is a risk that dark areas caused by the switching elements will be recognized by the observer as display unevenness.
[0007] The present disclosure has been made in view of the above circumstances, and has an object to provide a liquid crystal display device that suppresses moire and also suppresses display unevenness caused by a light shielding body. [Means for solving the problem]
[0008] In order to achieve the above object, the liquid crystal display device of the present disclosure comprises: a first liquid crystal display panel in which a first main pixel having a plurality of sub-pixels of different colors is arranged and which displays color display elements; a second liquid crystal display panel overlapping the first liquid crystal display panel, in which a plurality of second main pixels corresponding to the first main pixels are arranged, and which displays monochrome display elements; the second liquid crystal display panel includes a switching element that drives the second main pixel and has a light-shielding property, a first light-shielding pattern that extends in a predetermined first direction and is repeatedly arranged and has a light-shielding property, a second light-shielding pattern that extends in a predetermined second direction perpendicular to the first direction and is repeatedly arranged and has a light-shielding property, and a plurality of light-shielding bodies that have a light-shielding property; the first light-shielding pattern includes a first light-shielding line extending in the first direction and having a first inclined portion inclined with respect to the first direction and a second inclined portion inclined in a direction opposite to the first inclined portion with respect to the first direction, and a second light-shielding line adjacent to the first light-shielding line and axisymmetrical with the first light-shielding line with respect to the first direction, each of the light-shielding bodies is surrounded by the first light-shielding pattern and the second light-shielding pattern, and is located between an intersection line that connects intersections of the first light-shielding pattern and the second light-shielding pattern and extends in the first direction and an axis of symmetry of the first light-shielding pattern in a region in which a distance between the first light-shielding line and the second light-shielding line continuously expands from both sides in the first direction; At least one of the first light-shielding line and the second light-shielding line is formed from a scanning line of the second liquid crystal display panel. Effect of the Invention
[0009] According to the present disclosure, the first light-shielding pattern includes a first light-shielding line having a first inclined portion inclined with respect to the first direction and a second inclined portion inclined in the opposite direction to the first inclined portion with respect to the first direction, and a second light-shielding line adjacent to the first light-shielding line and symmetrical with the first light-shielding line with respect to the first direction, thereby suppressing moire. Furthermore, the light-shielding body is surrounded by the first light-shielding pattern and the second light-shielding pattern, and is located between an intersection line connecting the intersection points of the first light-shielding pattern and the second light-shielding pattern and extending in the first direction, and an axis of symmetry of the first light-shielding pattern, in a region where the interval between the first light-shielding line and the second light-shielding line expands continuously from both sides in the first direction, so that the interval between the dark areas caused by the switching element and the light-shielding body is shortened, thereby suppressing display unevenness caused by the dark areas. [Brief description of the drawings]
[0010] [Figure 1] FIG. 1 is a schematic diagram showing a liquid crystal display device according to a first embodiment. [Diagram 2] FIG. 2 is a plan view showing a first liquid crystal display panel according to the first embodiment. [Diagram 3] 1 is a cross-sectional view showing a liquid crystal display device according to a first embodiment. [Figure 4] FIG. 2 is a plan view showing a second liquid crystal display panel in accordance with the first embodiment. [Diagram 5] 1A and 1B are schematic diagrams illustrating a first light-shielding pattern and a second light-shielding pattern according to a first embodiment. [Figure 6]4 is a schematic diagram showing a scanning line and a signal line corresponding to one second main pixel, a switching element and a contact hole of the second main pixel, and a light shield according to the first embodiment. FIG. [Figure 7] 4 is a plan view showing two regions of a second main pixel according to the first embodiment. FIG. [Figure 8] 8 is a cross-sectional view of the switching element shown in FIG. 7 taken along line AA. [Figure 9] 8 is a cross-sectional view of the contact hole shown in FIG. 7 taken along line BB. [Figure 10] 8 is a cross-sectional view of the contact hole and the light shielding body shown in FIG. 7 taken along line CC. [Figure 11] FIG. 1 is a plan view showing a switching element according to a first embodiment. [Figure 12] FIG. 1 is a schematic diagram showing a first light-shielding pattern and a second light-shielding pattern corresponding to one second main pixel of a second liquid crystal display panel, a switching element and a light shield of the second main pixel, and a sub-pixel of a first liquid crystal display panel in accordance with embodiment 1. [Figure 13] FIG. 2 is a block diagram showing a display control unit according to the first embodiment. [Figure 14] FIG. 11 is a schematic diagram showing a scanning line and a signal line corresponding to one second main pixel, a switching element and a contact hole of the second main pixel, and a light shield according to the second embodiment. [Figure 15] FIG. 11 is a plan view showing two regions of a second main pixel according to the second embodiment. [Figure 16] 16 is a cross-sectional view of the light blocking body shown in FIG. 15 taken along line DD. [Figure 17] FIG. 11 is a schematic diagram showing scanning lines and signal lines corresponding to one second main pixel, a switching element and contact hole of the second main pixel, and a light shield according to the third embodiment. [Figure 18] FIG. 11 is a plan view showing a region of a second main pixel according to the third embodiment. [Figure 19] FIG. 11 is a plan view showing a switching element according to a third embodiment. [Figure 20]FIG. 11 is a schematic diagram showing a scanning line and a signal line corresponding to one second main pixel, a switching element and a contact hole of the second main pixel, and a light shield according to the fourth embodiment. [Figure 21] FIG. 11 is a plan view showing a region of a second main pixel according to the fourth embodiment. [Figure 22] FIG. 13 is a schematic diagram showing scanning lines and signal lines corresponding to one second main pixel, a switching element and contact hole of the second main pixel, and a light shield according to the fifth embodiment. [Figure 23] FIG. 13 is a plan view showing a region of a second main pixel according to the fifth embodiment. [Figure 24] FIG. 11 is a plan view showing a switching element according to a fifth embodiment. [Diagram 25] FIG. 13 is a plan view showing a switching element according to a modified example. [Figure 26] FIG. 13 is a schematic diagram showing scanning lines and signal lines corresponding to four second main pixels, switching elements and contact holes of the second main pixels, and a light shield according to a modified example. [Figure 27] FIG. 13 is a plan view showing a pixel electrode 250 according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0011] Hereinafter, a liquid crystal display device according to an embodiment will be described with reference to the drawings.
[0012] <Embodiment 1> A liquid crystal display device 10 according to this embodiment will be described with reference to Figures 1 to 13. The liquid crystal display device 10 displays color display elements (characters, images, patterns, etc.) using a first liquid crystal display panel 100 and a second liquid crystal display panel 200, which will be described later.
[0013] As shown in FIG. 1, the liquid crystal display device 10 includes a panel unit 50, a backlight 300, and a display control unit 400. The panel unit 50 includes a first liquid crystal display panel 100 and a second liquid crystal display panel 200. The backlight 300 is a light source that irradiates light to the first liquid crystal display panel 100 and the second liquid crystal display panel 200. The display control unit 400 controls display of the first liquid crystal display panel 100 and the second liquid crystal display panel 200. In this specification, for ease of understanding, the right direction (right direction on the paper) of the liquid crystal display device 10 in FIG. 1 is described as the +X direction, the upward direction (upward on the paper) is described as the +Y direction, and the direction perpendicular to the +X direction and the +Y direction (toward the viewer on the paper) is described as the +Z direction.
[0014] (Panel section) The panel unit 50 has a first liquid crystal display panel 100 and a second liquid crystal display panel 200. The first liquid crystal display panel 100 is located on the viewer's side (+Z side) and displays color display elements. The second liquid crystal display panel 200 is located on the opposite side to the viewer's side of the first liquid crystal display panel 100 (the rear side of the first liquid crystal display panel 100) and overlaps the first liquid crystal display panel 100. The second liquid crystal display panel 200 displays monochrome display elements.
[0015] (First LCD panel) The first liquid crystal display panel 100 is, for example, a known transmissive in-plane switching type liquid crystal display panel. The first liquid crystal display panel 100 is active-matrix driven by TFT (Thin Film Transistor) elements.
[0016] 2, the first liquid crystal display panel 100 has first main pixels 102 arranged in a matrix. The first main pixels 102 are formed of a red pixel 104R that emits red light, a green pixel 104G that emits green light, and a blue pixel 104B that emits blue light, which are defined by a black matrix BM. The red pixel 104R, the green pixel 104G, and the blue pixel 104B may be collectively referred to as sub-pixels 104.
[0017] 3, the first liquid crystal display panel 100 includes a first TFT substrate 110, a first counter substrate 120, a first liquid crystal 130, a first polarizing plate 132, a second polarizing plate 134, and a first driver circuit 136. The first TFT substrate 110 and the first counter substrate 120 sandwich the first liquid crystal 130. The first polarizing plate 132 is provided on the first TFT substrate 110. The second polarizing plate 134 is provided on the first counter substrate 120.
[0018] The first TFT substrate 110 is, for example, a glass substrate. A TFT element for selecting a sub-pixel 104, a common electrode, a pixel electrode, an alignment film for aligning the first liquid crystal 130, and the like are provided on a main surface 110a of the first TFT substrate 110 facing the first liquid crystal 130 (none of which are shown).
[0019] Furthermore, a plurality of common lines, a plurality of signal lines, and a plurality of scanning lines are formed on the main surface 110a of the first TFT substrate 110 (none of which are shown). The common lines supply a common potential to a common electrode that applies a voltage to the first liquid crystal 130. The signal lines supply a voltage to a pixel electrode that applies a voltage to the first liquid crystal 130 via the TFT. The signal lines extend in the Y direction and are bent along the outer shape of the sub-pixels 104. The scanning lines supply a voltage to operate the TFTs. The scanning lines extend linearly in the Y direction. The sub-pixels 104 are surrounded by the signal lines and the scanning lines, and TFT elements are provided at the intersections of the scanning lines and the signal lines. A first polarizing plate 132 is provided on a main surface 110b opposite to the main surface 110a of the first TFT substrate 110.
[0020] As shown in FIG. 3, the first counter substrate 120 faces the first TFT substrate 110 and is bonded to the first TFT substrate 110 by a seal material 138. The first counter substrate 120 is, for example, a glass substrate. A color filter 122, a black matrix BM, an alignment film for aligning the first liquid crystal 130, and the like are provided on a main surface 120a of the first counter substrate 120 on the first liquid crystal 130 side. The color filter 122 is, for example, a striped color filter (a color filter whose stripe direction is the Y direction) in which color filters of the same color are arranged in the Y direction. The red color filter, the green color filter, and the blue color filter of the color filter 122 are surrounded by the black matrix BM and correspond to the red pixel 104R, the green pixel 104G, and the blue pixel 104B, respectively. The black matrix BM defines the first main pixel 102 and the sub-pixel 104 as shown in FIG. 2. A second polarizing plate 134 is provided on a main surface 120b opposite to the main surface 120a of the first opposing substrate 120. For ease of understanding, the black matrix BM, alignment film, and the like are omitted in FIG.
[0021] 3, the first liquid crystal 130 is sandwiched between the first TFT substrate 110 and the first counter substrate 120. The first liquid crystal 130 is, for example, a positive type nematic liquid crystal. The first liquid crystal 130 is aligned in a direction parallel to the main surface 110a of the first TFT substrate 110 by an alignment film. Furthermore, the first liquid crystal 130 rotates in a plane parallel to the main surface 110a of the first TFT substrate 110 when a voltage is applied.
[0022] The first polarizing plate 132 is provided on the main surface 110b of the first TFT substrate 110. The second polarizing plate 134 is provided on the main surface 120b of the first counter substrate 120. Either the transmission axis of the first polarizing plate 132 or the transmission axis of the second polarizing plate 134 is arranged parallel to the alignment direction of the first liquid crystal 130, and the transmission axis of the first polarizing plate 132 and the transmission axis of the second polarizing plate 134 are perpendicular to each other. The first polarizing plate 132 is attached to a second counter substrate 220 of the second liquid crystal display panel 200 (described later) by a light-transmitting adhesive layer 150. The adhesive layer 150 is, for example, an OCA (Optical Clear Adhesive).
[0023] The first driver circuit 136 is provided on the main surface 110a of the first TFT substrate 110. The first driver circuit 136 supplies voltages to the scanning lines, the signal lines, and the common lines based on color signals supplied from the display control unit 400.
[0024] (2nd LCD panel) 3, the second liquid crystal display panel 200 is located on the rear side (-Z side) of the first liquid crystal display panel 100. The second liquid crystal display panel 200 is bonded to the first liquid crystal display panel 100 by an adhesive layer 150. The second liquid crystal display panel 200 displays monochrome display elements.
[0025] In this embodiment, the second liquid crystal display panel 200 is a transmissive horizontal electric field type liquid crystal display panel using positive liquid crystal. The second liquid crystal display panel 200 is active matrix driven by a switching element 240 described later. The second liquid crystal display panel 200 has second main pixels 202 arranged in a matrix as shown in FIG. 4. In this embodiment, one second main pixel 202 of the second liquid crystal display panel 200 corresponds to 16 (4×4) first main pixels 102 of the first liquid crystal display panel 100, and one second main pixel 202 of the second liquid crystal display panel 200 emits light to the 16 first main pixels 102 of the first liquid crystal display panel 100. In FIG. 4, the scanning lines GL and the signal lines DL are indicated by dashed lines. In the following drawings, the scanning lines GL and the signal lines DL may be indicated by dashed lines or solid lines.
[0026] 3, the second liquid crystal display panel 200 includes a second TFT substrate 210, a second opposing substrate 220, a second liquid crystal 230, a third polarizing plate 232, and a second driver circuit 236. The second TFT substrate 210 and the second opposing substrate 220 sandwich the second liquid crystal 230. The third polarizing plate 232 is provided on the second TFT substrate 210. In this embodiment, the first polarizing plate 132 of the first liquid crystal display panel 100 also serves as a polarizing plate on the light exit side of the second liquid crystal display panel 200.
[0027] The second TFT substrate 210 is, for example, a glass substrate. On the main surface 210a of the second TFT substrate 210 on the second liquid crystal 230 side, a plurality of scanning lines GL, a plurality of signal lines DL, a common line (not shown), a switching element 240, a pixel electrode 250, and a common electrode CE of the second main pixel 202, an alignment film (not shown) for aligning the second liquid crystal 230, and the like are formed, which will be described later. The common line supplies a common potential to the common electrode CE that applies a voltage to the second liquid crystal 230. The signal line DL supplies a voltage to the pixel electrode 250 that applies a voltage to the second liquid crystal 230 via the switching element 240. The scanning line GL supplies a voltage for operating the switching element 240. On the main surface 210b opposite to the main surface 210a of the second TFT substrate 210, a third polarizing plate 232 is provided.
[0028] In this embodiment, the scanning lines GL form a first light-shielding pattern 260, which will be described later, and the signal lines DL form a second light-shielding pattern 270, which will be described later. As will be described later, the switching element 240 has a light-shielding property. Furthermore, an end of the drain electrode 248 of the switching element 240, which is connected to the pixel electrode 250, forms a light-shielding body 280. The configurations of the scanning lines GL, the signal lines DL, the second main pixel 202 (the switching element 240, the pixel electrode 250, etc.), etc. will be described later.
[0029] The second opposing substrate 220 faces the second TFT substrate 210 and is bonded to the second TFT substrate 210 by a sealant 238. The second opposing substrate 220 is, for example, a glass substrate. An alignment film (not shown) that aligns the second liquid crystal 230 is provided on a main surface 220a of the second opposing substrate 220 facing the second liquid crystal 230. An adhesive layer 150 is provided on a main surface 220b of the second opposing substrate 220 opposite to the main surface 220a. The second opposing substrate 220 is bonded to the first liquid crystal display panel 100 (first polarizing plate 132) via the adhesive layer 150.
[0030] The second liquid crystal 230 is sandwiched between the second TFT substrate 210 and the second opposing substrate 220. The second liquid crystal 230 is, for example, a positive type nematic liquid crystal. The second liquid crystal 230 is initially aligned in the Y direction by an alignment film. The second liquid crystal 230 rotates in a plane parallel to the main surface 210a of the second TFT substrate 210 when a voltage is applied.
[0031] The third polarizer 232 is provided on the main surface 210b of the second TFT substrate 210. The transmission axis of the third polarizer 232 is arranged parallel to the alignment direction of the second liquid crystal 230. The transmission axis of the third polarizer 232 and the transmission axis of the first polarizer 132 (the polarizer on the light exit side of the second liquid crystal display panel 200) of the first liquid crystal display panel 100 are perpendicular to each other, and the second liquid crystal display panel 200 operates in a normally black mode.
[0032] The second driver circuit 236 is provided on the main surface 210a of the second TFT substrate 210. The second driver circuit 236 supplies voltages to the scanning lines GL, the signal lines DL, and the common lines based on a monochrome signal supplied from the display control unit 400.
[0033] The scanning lines GL, the signal lines DL, the first light-shielding pattern 260, and the second light-shielding pattern 270 will be described with reference to FIGS.
[0034] The scanning wiring GL and the first light-shielding pattern 260 will be described. The scanning wiring GL has light-shielding properties and is made of metal (aluminum (Al), molybdenum (Mo), etc.). As shown in FIG. 4 and FIG. 5, the scanning wiring GL extends in the X direction and is arranged in the Y direction. A pair of adjacent scanning wirings GL extends in the X direction and forms a first light-shielding pattern 260 having light-shielding properties. The first light-shielding patterns 260 are repeatedly arranged in the Y direction. Here, light-shielding properties mean that at least a part of incident light is blocked. In this embodiment, the X direction corresponds to the predetermined first direction.
[0035] As shown in Fig. 5, one of a pair of adjacent scanning lines GL (hereinafter, also referred to as a first light-shielding line 262) has a first inclined portion 262a, a second inclined portion 262b, and a first flat portion 262c. The first inclined portion 262a is inclined at an acute angle in a counterclockwise direction with respect to the +X direction. The second inclined portion 262b is inclined at an acute angle in the opposite direction (clockwise direction) to the first inclined portion 262a with respect to the +X direction. The first flat portion 262c extends parallel to the X direction and connects the first inclined portion 262a and the second inclined portion 262b.
[0036] The other scanning line GL (hereinafter also referred to as the second light shielding line 264) of a pair of adjacent scanning lines GL is in a line-symmetrical relationship with one scanning line GL (the first light shielding line 262) with respect to the X direction. The second light shielding line 264 has a third inclined portion 264a, a fourth inclined portion 264b, and a second flat portion 264c. The third inclined portion 264a faces the first inclined portion 262a of the first light shielding line 262, and is inclined at an acute angle in the clockwise direction with respect to the +X direction. The fourth inclined portion 264b faces the second inclined portion 262b of the first light shielding line 262, and is inclined at an acute angle in the opposite direction (counterclockwise direction) to the third inclined portion 264a with respect to the +X direction. The second flat portion 264c extends parallel to the X direction, faces the first flat portion 262c of the first light-shielding line 262, and connects the third inclined portion 264a and the fourth inclined portion 264b.
[0037] In this embodiment, the first light-shielding line 262 has a first inclined portion 262a and a second inclined portion 262b inclined in the opposite direction to the first inclined portion 262a. Furthermore, the first light-shielding line 262 and the second light-shielding line 264 are in a line-symmetrical relationship with respect to the X direction. Therefore, as shown in FIG. 5, the interval between the first light-shielding line 262 and the second light-shielding line 264 changes continuously along the X direction between the first inclined portion 262a of the first light-shielding line 262 and the third inclined portion 264a of the second light-shielding line 264 (interval L1). In addition, the interval between the first light-shielding line 262 and the second light-shielding line 264 also changes continuously along the X direction between the second inclined portion 262b of the first light-shielding line 262 and the fourth inclined portion 264b of the second light-shielding line 264 (interval L2). Furthermore, the intervals (intervals L3 and L4) between the first flat portion 262c of the first light-shielding line 262 and the second flat portion 264c of the second light-shielding line 264 vary along the Y direction. As a result, even if the second liquid crystal display panel 200 and the first liquid crystal display panel 100 are overlapped, interference of spatial frequencies in the second liquid crystal display panel 200 and the first liquid crystal display panel 100 is suppressed, and moire in the liquid crystal display device 10 can be suppressed.
[0038] Next, the signal wiring DL and the second light-shielding pattern 270 will be described. The signal wiring DL has light-shielding properties, similar to the scanning wiring GL, and is made of a metal (aluminum (Al), molybdenum (Mo), etc.). As shown in Figs. 4 and 5, the signal wiring DL extends in the Y direction and is arranged in the X direction. In addition, a pair of adjacent signal wirings DL extends in the Y direction and forms a second light-shielding pattern 270 having light-shielding properties. In this embodiment, the Y direction corresponds to the predetermined second direction.
[0039] One signal line DL (hereinafter, also referred to as the third light-shielding line 272) of a pair of adjacent signal lines DL has a fifth inclined portion 272a and a sixth inclined portion 272b, as shown in Fig. 5. The fifth inclined portion 272a is inclined at an acute angle in the counterclockwise direction with respect to the +Y direction. The sixth inclined portion 272b is inclined at an acute angle in the opposite direction (clockwise direction) to the fifth inclined portion 272a with respect to the +Y direction.
[0040] The other signal wiring DL (hereinafter also referred to as the fourth light-shielding line 274) of a pair of adjacent signal wirings DL is in a line-symmetrical relationship with one signal wiring DL (the third light-shielding line 272) with respect to the Y direction. The fourth light-shielding line 274 has a seventh inclined portion 274a and an eighth inclined portion 274b. The seventh inclined portion 274a faces the fifth inclined portion 272a of the third light-shielding line 272, and is inclined at an acute angle in the clockwise direction with respect to the +Y direction. The eighth inclined portion 274b faces the sixth inclined portion 272b of the third light-shielding line 272, and is inclined at an acute angle in the opposite direction (counterclockwise direction) to the seventh inclined portion 274a with respect to the +Y direction.
[0041] In this embodiment, the third light-shielding line 272 has a fifth inclined portion 272a and a sixth inclined portion 272b inclined in the opposite direction to the fifth inclined portion 272a. Furthermore, the third light-shielding line 272 and the fourth light-shielding line 274 are in a line-symmetrical relationship with respect to the Y direction. Therefore, as shown in FIG. 5, the distance L5 between the third light-shielding line 272 and the fourth light-shielding line 274 changes continuously. As a result, even if the second liquid crystal display panel 200 and the first liquid crystal display panel 100 are overlapped, interference of spatial frequencies in the second liquid crystal display panel 200 and the first liquid crystal display panel 100 is suppressed, and moire in the liquid crystal display device 10 can be suppressed.
[0042] Next, the scanning wiring GL (first light-shielding line 262 and second light-shielding line 264), the signal wiring DL (third light-shielding line 272 and fourth light-shielding line 274), and the second main pixel 202 will be described with reference to FIGS. 6 to 11. FIG. 6 shows the scanning wiring GL and the signal wiring DL corresponding to one second main pixel 202, the switching element 240, the contact holes CH1 and CH2, and the light shielding body 280 of the second main pixel 202. As shown in FIG. 6, the second main pixel 202 has a rectangular shape. The second main pixel 202 is divided into eight regions 202A of two rows and four columns in the X direction and the Y direction. Note that in FIG. 6, for ease of understanding, the switching element 240, the contact holes CH1 and CH2, and the light shielding body 280 are shown by solid lines in a simplified manner. For convenience, the contact holes CH1, CH2 and the light shielding body 280 are illustrated as rectangles, but the shapes of the contact holes CH1, CH2 and the light shielding body 280 are not limited to rectangular. In the following drawings, the switching element 240, the contact hole CH2, the light shielding body 280, etc. may be simplified in some cases.
[0043] FIG. 7 shows two regions 200A of the eight regions 202A of the second main pixel 202. As shown in FIG. 7, two pixel electrodes 250 are arranged in each of the regions 202A. The two pixel electrodes 250 arranged in one region 202A are connected to one switching element 240. One second main pixel 202 (16 pixel electrodes 250) is driven by a voltage (signal) from a pair of adjacent scanning lines GL and a pair of adjacent signal lines DL. That is, the same gate signal and the same data signal are simultaneously input to each of the eight switching elements 240. Note that the pair of adjacent scanning lines GL may be two scanning lines GL branched from one scanning line. The pair of adjacent signal lines DL may be two signal lines DL branched from one signal line. In addition, in FIG. 7, the common electrode CE is omitted for ease of understanding. The common electrode CE may also be omitted in the following figures.
[0044] Each second main pixel 202 has eight switching elements 240, 16 pixel electrodes 250, 16 contact holes CH1 and CH2, and a common electrode CE. The switching elements 240 and contact holes CH1 and CH2 of the second main pixel 202, and the scanning lines GL and signal lines DL corresponding to each second main pixel 202 are arranged line-symmetrically with respect to the X and Y directions.
[0045] 9, the scanning lines GL (first light-shielding lines 262 and second light-shielding lines 264) are formed on the main surface 210a of the second TFT substrate 210, and are covered with a first insulating layer 292. The signal lines DL (third light-shielding lines 272 and fourth light-shielding lines 274) are formed on the first insulating layer 292, and are covered with a second insulating layer 294 described later.
[0046] 8 to 10, the common electrode CE of the second main pixel 202 is formed on the second insulating layer 294. The common electrode CE is made of, for example, ITO (Indium Tin Oxide). The common electrode CE is covered with a third insulating layer 296.
[0047] Each of the pixel electrodes 250 of the second main pixel 202 has a comb-tooth shape as shown in FIG. 7. Two pixel electrodes 250 are arranged in one region 202A, and the two pixel electrodes 250 arranged in one region 202A are connected to one switching element 240 (drain electrode 248). The pixel electrode 250 is formed on a third insulating layer 296 as shown in FIGS. 8 to 10. The pixel electrode 250 is formed of, for example, ITO. In addition, the pixel electrode 250 and the common electrode CE form an auxiliary capacitance for holding a signal voltage applied to the second liquid crystal 230.
[0048] As shown in FIG. 6 and FIG. 7, the switching element 240 of the second main pixel 202 is disposed along the scanning line GL (the first light shielding line 262 and the second light shielding line 264). In this embodiment, two switching elements 240 are disposed on either side of an intersection P1 between the scanning line GL and the signal line DL. In other words, the two switching elements 240 are disposed along the first inclined portion 262a and the second inclined portion 262b of the first light shielding line 262 and the third inclined portion 264a and the fourth inclined portion 264b of the second light shielding line 264 on either side of an intersection P1 between the first light shielding pattern 260 (the first light shielding line 262 and the second light shielding line 264) and the second light shielding pattern 270 (the third light shielding line 272 and the fourth light shielding line 274).
[0049] The switching element 240 has a light blocking property. In this embodiment, the switching element 240 also functions as a light blocking body that blocks light emitted from the backlight 300 and incident on the sub-pixel 104 (first main pixel 102) of the first liquid crystal display panel 100.
[0050] As shown in Fig. 8 and Fig. 11, the switching element 240 has a gate electrode 242, a semiconductor layer 244, a source electrode 246, and a drain electrode 248. The gate electrode 242, the source electrode 246, and the drain electrode 248 are made of a metal having a light blocking property, such as aluminum (Al) or molybdenum (Mo). The semiconductor layer 244 is made of, for example, amorphous silicon. The switching element 240 is, for example, a TFT element. Note that the first insulating layer 292 is omitted in Fig. 11.
[0051] The gate electrode 242 is formed integrally with the scanning line GL on the main surface 210a of the second TFT substrate 210. The gate electrode 242, like the scanning line GL, is covered with a first insulating layer 292. Since the gate electrode 242, which is formed in the same layer as the scanning line GL (the first light-shielding line 262 and the second light-shielding line 264), is made of a metal having light-shielding properties, the switching element 240 has light-shielding properties and also functions as a light shield.
[0052] The semiconductor layer 244 is provided in an island shape on the gate electrode 242 via a first insulating layer 292. The source electrode 246 is formed integrally with the signal line DL.
[0053] The drain electrode 248 branches into two drain electrodes 248. Each of the branched drain electrodes 248 is connected to the pixel electrode 250 at a contact portion 248a via a contact hole CH1 or a contact hole CH2 that penetrates the third insulating layer 296 and the second insulating layer 294 (FIGS. 7, 9, and 10). The contact portion 248a of the drain electrode 248 is connected to the pixel electrode 250 made of ITO having light transmission through a contact hole CH1 or a contact hole CH2 that penetrates the third insulating layer 296 and the second insulating layer 294, and therefore functions as a light shield that blocks light.
[0054] In a plan view, the contact portion 248a of the drain electrode 248, which is connected to one pixel electrode 250 via the contact hole CH1, is located on the scanning line GL (FIGS. 6, 7, and 9). The contact portion 248a of the drain electrode 248, which is connected to the other pixel electrode 250 via the contact hole CH2, is located between the intersection line CL that connects the intersection point P1 of the scanning line GL and the signal line DL and extends in the first direction and the symmetry axis SL of the scanning line GL, in a region S1 surrounded by the scanning line GL and the signal line DL and in which the interval L between the pair of scanning lines GL expands continuously from both sides in the X direction (FIG. 6). In other words, the contact portion 248a connected to the other pixel electrode 250 via the contact hole CH2 is surrounded by the first light-shielding pattern 260 (the first light-shielding line 262 and the second light-shielding line 264) and the second light-shielding pattern 270 (the third light-shielding line 272 and the fourth light-shielding line 274), and is located between the intersection line CL connecting the intersection point P1 of the first light-shielding pattern 260 and the second light-shielding pattern 270 and extending in the X-direction, and the symmetry axis SL of the first light-shielding pattern 260, in the region S1 where the spacing L between the first light-shielding line 262 and the second light-shielding line 264 expands continuously from both sides in the X-direction.
[0055] In this embodiment, the contact portion 248a of the drain electrode 248 connected to one pixel electrode 250 via the contact hole CH1 is located on the scanning line GL, i.e., on the first light shielding line 262 or the second light shielding line 264, and therefore does not substantially function as a light shield. On the other hand, the contact portion 248a of the drain electrode 248 connected to the other pixel electrode 250 via the contact hole CH2 functions as a light shield that blocks light, and forms the light shield 280. The light shield 280 blocks light emitted from the backlight 300 and incident on the sub-pixel 104 (first main pixel 102) of the first liquid crystal display panel 100.
[0056] 6, the light shielding body 280 corresponding to one switching element 240 is surrounded by the first light shielding pattern 260 (the first light shielding line 262 and the second light shielding line 264) and the second light shielding pattern 270 (the third light shielding line 272 and the fourth light shielding line 274), and is located between the intersection line CL that connects the intersection point P1 of the first light shielding pattern 260 and the second light shielding pattern 270 and extends in the X direction, and the symmetry axis SL of the first light shielding pattern 260 in the region S1 in which the interval L between the first light shielding line 262 and the second light shielding line 264 expands continuously from both sides in the X direction. In the region S1, two light shielding bodies 280 are located side by side in the X direction between the intersection line CL and the symmetry axis SL in the region S1, and four light shielding bodies 280 are located in the region S1. The four light shielding bodies 280 are located line-symmetrically with respect to each of the X direction and the Y direction.
[0057] 8 to 10, the first insulating layer 292 covers the scanning line GL and the gate electrode 242 of the switching element 240. The second insulating layer 294 covers the semiconductor layer 244, source electrode 246, drain electrode 248, and first insulating layer 292 of the switching element 240. The third insulating layer 296 covers the common electrode CE and the second insulating layer 294. The first insulating layer 292, the second insulating layer 294, and the third insulating layer 296 are formed of silicon nitride (SiNx), silicon oxide (SiOx), or the like.
[0058] In this embodiment, one second main pixel 202 corresponds to 16 (4×4) first main pixels 102 of the first liquid crystal display panel 100, and therefore the switching elements 240 having light-blocking properties are aligned at wide intervals in the X and Y directions, as shown in Fig. 6. Therefore, if only the switching elements 240 block light emitted from the backlight 300 and incident on the sub-pixels 104 of the first liquid crystal display panel 100, the intervals between dark areas caused by the switching elements 240 will be wide, and the dark areas caused by the switching elements 240 may be recognized as display unevenness by the viewer.
[0059] In this embodiment, the light shielding body 280 is located between the intersection line CL and the symmetry axis SL in the region S1, and the light shielding body 280 also blocks light emitted from the backlight 300 and incident on the sub-pixels 104 of the first liquid crystal display panel 100. Therefore, dark areas are formed due to each of the switching element 240 and the light shielding body 280, and the interval between the dark areas becomes narrow. This makes it possible to prevent the dark areas from being recognized by the viewer as display unevenness. In other words, display unevenness caused by the dark areas can be suppressed.
[0060] Next, the overlapping of the first light-shielding pattern 260 (scanning line GL), the second light-shielding pattern 270 (signal line DL), the switching element 240, the light shielding body 280, and the sub-pixel 104 of the first liquid crystal display panel 100 will be described.
[0061] 12, in the first light-shielding pattern 260, a first inclined portion 262a and a second inclined portion 262b of the first light-shielding line 262 and a third inclined portion 264a and a fourth inclined portion 264b of the second light-shielding line 264 are inclined across a plurality of sub-pixels 104 (104R, 104G, 104B) of different colors of the first liquid crystal display panel 100. As a result, the luminance of the sub-pixels 104 overlapping with the first light-shielding pattern 260 is slightly reduced, and the first main pixel 102 having the sub-pixels 104 overlapping with the first light-shielding pattern 260 exhibits a color slightly different from the color to be displayed. However, since the sub-pixels 104 that cause the same degree of luminance reduction are located in close proximity, the luminance of the sub-pixels 104 is averaged for the viewer viewing the liquid crystal display device 10, and the viewer recognizes the luminance of the plurality of sub-pixels 104 with reduced luminance as the same luminance gradation. Therefore, in the overall display of the liquid crystal display device 10, color moiré can be prevented from being noticed by the viewer.
[0062] In the second light-shielding pattern 270, the fifth inclined portion 272a and the sixth inclined portion 272b of the third light-shielding line 272 and the seventh inclined portion 274a and the eighth inclined portion 274b of the fourth light-shielding line 274 are inclined across a plurality of sub-pixels 104 (104R, 104B) of different colors of the first liquid crystal display panel 100. As a result, similar to the first light-shielding pattern 260, the first main pixel 102 having the sub-pixel 104 overlapping with the second light-shielding pattern 270 exhibits a color slightly different from the color to be displayed. However, the color presented by the first main pixel 102 having a sub-pixel 104 overlapping with the second light-shielding pattern 270 and the color presented by the first main pixel 102 located in the vicinity of the first main pixel 102 having a sub-pixel 104 overlapping with the second light-shielding pattern 270 are perceived as different colors by the viewer, and the saturation of the combined color is also reduced, so that the color moiré perceived by the viewer can be suppressed for the entire display of the liquid crystal display device 10.
[0063] The switching element 240 and the light shielding body 280 overlap a part of the sub-pixel 104. As shown in FIG. 12, the light shielding body 280 is preferably located on a straight line PL1 that connects one end of the first flat portion 262c and one end of the second flat portion 264c and extends in the Y direction, or on a straight line PL2 that connects the other end of the first flat portion 262c and the other end of the second flat portion 264c and extends in the Y direction. In addition, it is preferable that the center P2 of the light shielding body 280 is located away from the center line PL3 that extends in the X direction of the first flat portion 262c or the second flat portion 264c by one sub-pixel (the length D1 of the sub-pixel 104 in the Y direction) in the Y direction. Furthermore, it is preferable that the distance in the X direction between the centers P2 of two light shielding bodies 280 arranged in the X direction is one sub-pixel (the length D2 of the sub-pixel 104 in the X direction). As a result, display unevenness due to dark areas can be further suppressed.
[0064] (Backlight) 1 and 3, the backlight 300 is disposed on the rear side (-Z side) of the second liquid crystal display panel 200. The backlight 300 is, for example, a direct type backlight. The backlight 300 includes white LED (Light emitting diode) elements, a reflective sheet, a diffusion sheet, and the like (none of which are shown).
[0065] The display control unit 400 controls the display of the first liquid crystal display panel 100 and the second liquid crystal display panel 200. The display control unit 400 includes an image data distribution unit 410, a first image signal generation unit 420, a second image luminance signal generation unit 430, and a second image signal generation unit 440, as shown in FIG.
[0066] The image data distribution unit 410 distributes the input image data to a first image signal generation unit 420 and a second image luminance signal generation unit 430 .
[0067] The first image signal generating unit 420 generates color display elements to be displayed on the first liquid crystal display panel 100 from the input data distributed from the image data distributing unit 410. Specifically, a first gradation converting unit 422 of the first image signal generating unit 420 performs gradation conversion to convert the distributed input data into color data having luminance-gradation characteristics suitable for the first liquid crystal display panel 100. For example, a lookup table in which input / output relationships are preset is used for data conversion. The first image signal generating unit 420 transmits color signals representing the generated color display elements to the first driver circuit 136 of the first liquid crystal display panel 100.
[0068] The second image luminance signal generating unit 430 generates a luminance signal for generating a monochrome display element to be displayed on the second liquid crystal display panel 200 from the input image data distributed from the image data distributing unit 410. The second image luminance signal generating unit 430 obtains a luminance level of one second main pixel 202 of the second liquid crystal display panel 200 from, for example, an average value, a frequent value, a minimum value, a maximum value, or the like of red gradation value, green gradation value, and blue gradation value of 16 first main pixels 102 of the first liquid crystal display panel 100 to which light emitted from one second main pixel 202 of the second liquid crystal display panel 200 is incident. The obtained luminance level may be a gradation value. The second image luminance signal generating unit 430 transmits a luminance signal representing the obtained luminance level to the second image signal generating unit 440.
[0069] The second image signal generating section 440 generates monochrome display elements to be displayed on the second liquid crystal display panel 200 based on the luminance signal transmitted from the second image luminance signal generating section 430. The second image signal generating section 440 generates monochrome display elements by, for example, performing averaging processing and gradation conversion. Specifically, the calculation section 442 of the second image signal generating section 440 averages the luminance levels of the second main pixels 202 located within a predetermined distance from the second main pixel 202 of interest, for example, by weighted averaging based on the distance from the second main pixel 202 of interest. This allows the second image signal generating section 440 to generate monochrome display elements with blurred edges. Furthermore, the second gradation converting section 444 of the second image signal generating section 440 generates monochrome data having luminance-gradation characteristics suitable for the second liquid crystal display panel 200. The configuration of the second gradation converting section 444 is similar to that of the first gradation converting section 422 of the first image signal generating section 420. The second gradation converter 444 transmits the generated monochrome signals representing the monochrome display elements to the second driver circuit 236 of the second liquid crystal display panel 200 .
[0070] The monochrome signal transmitted to the second liquid crystal display panel 200 is delayed with respect to the color signal transmitted to the first liquid crystal display panel 100 due to the calculation of the brightness level, averaging processing, etc., performed by the second image brightness signal generation unit 430. Therefore, the display control unit 400 is provided with a synchronization circuit (not shown) to synchronize the output of the monochrome signal and the color signal. The synchronization circuit causes monochrome display elements corresponding to the color display elements of the first liquid crystal display panel 100 to be displayed on the second liquid crystal display panel 200, so that display elements of appropriate colors are displayed on the liquid crystal display device 10.
[0071] The display control unit 400 is composed of a GPU (Graphic Processing Unit), a memory, a timing controller, a power supply circuit, etc. The function of the display control unit 400 is realized, for example, by the GPU processing input data stored in the memory, and the timing controller generating signals corresponding to the first liquid crystal display panel 100 and the second liquid crystal display panel 200 based on the processed data.
[0072] As described above, since the first light-shielding pattern (scanning wiring GL) of the second liquid crystal display panel 200 is formed of the first light-shielding line 262 having the first inclined portion 262a, the second inclined portion 262b, and the first flat portion 262c connecting the first inclined portion 262a and the second inclined portion 262b, and the second light-shielding line 264 which is line-symmetrical to the first light-shielding line 262 with respect to the X direction, it is possible to suppress interference of spatial frequencies in the first liquid crystal display panel 100 and the second liquid crystal display panel 200 and to suppress moire in the liquid crystal display device 10. Furthermore, it is possible to suppress the occurrence of color moire.
[0073] Furthermore, since the second light-shielding pattern (signal wiring DL) of the second liquid crystal display panel 200 is formed of the third light-shielding line 272 having the fifth inclined portion 272a and the sixth inclined portion 272b, and the fourth light-shielding line 274 that is line-symmetrical to the third light-shielding line 272 with respect to the Y direction, it is possible to suppress interference of spatial frequencies in the first liquid crystal display panel 100 and the second liquid crystal display panel 200, and to suppress moire in the liquid crystal display device 10. The occurrence of color moire can also be suppressed.
[0074] Furthermore, the light shielding body 280 is surrounded by the first light shielding pattern 260 and the second light shielding pattern 270, and is located between the intersection line CL that connects the intersection point P1 of the first light shielding pattern 260 and the second light shielding pattern 270 and extends in the X direction, and the symmetry axis SL of the first light shielding pattern 260, in the region S1 where the interval L between the first light shielding line 262 and the second light shielding line 264 expands continuously from both sides in the X direction, so that the interval between the dark parts caused by the switching element 240 and the light shielding body 280 is narrowed, and display unevenness caused by the light shielding body (the switching element 240 and the light shielding body 280) can be suppressed. Therefore, the liquid crystal display device 10 can suppress moire and display unevenness caused by the light shielding body.
[0075] In this embodiment, one switching element 240 is connected to two pixel electrodes 250. Therefore, even if a defect occurs in the pixel electrode 250, the defective area in the second main pixel 202 can be made small, and the manufacturing yield of the second liquid crystal display panel 200 can be improved.
[0076] <Embodiment 2> In the first embodiment, the light shielding body 280 of the second liquid crystal display panel 200 is formed from the contact portion 248a of the drain electrode 248. The light shielding body 280 may be formed from a dummy light shielding layer.
[0077] The liquid crystal display device 10 of this embodiment includes a panel unit 50, a backlight 300, and a display control unit 400, similarly to the liquid crystal display device 10 of embodiment 1. The first liquid crystal display panel 100 and the second liquid crystal display panel 200 of this embodiment, including the first light-shielding pattern 260 and the second light-shielding pattern 270 (scanning lines GL and signal lines DL), the backlight 300, and the display control unit 400, are configured similarly to those of embodiment 1. Here, the second main pixel 202 and the light shielding body 280 of the second liquid crystal display panel 200 will be described.
[0078] In this embodiment, the second liquid crystal display panel 200 also has second main pixels 202 arranged in a matrix (FIG. 4). Each second main pixel 202 of the second liquid crystal display panel 200 corresponds to 16 (4×4) first main pixels 102 of the first liquid crystal display panel 100.
[0079] As shown in Fig. 14, the second main pixel 202 of this embodiment has a rectangular shape and is divided into eight regions 202A of two rows and four columns in the X and Y directions. As shown in Fig. 15, one pixel electrode 250 is arranged in each of the regions 202A. One pixel electrode 250 arranged in one region 202A is connected to one switching element 240. As in the first embodiment, one second main pixel 202 (eight pixel electrodes 250) is driven by voltages (signals) from a pair of adjacent scanning lines GL and a pair of adjacent signal lines DL.
[0080] Each of the pixel electrodes 250 of the second main pixel 202 of this embodiment has a comb-tooth shape as shown in FIG. 15. In this embodiment, one pixel electrode 250 is disposed in one region 202A. One pixel electrode 250 is connected to one switching element 240 (contact portion 248a of the drain electrode 248) through a contact hole CH1 located on the scanning line GL (first light-shielding line 262 and second light-shielding line 264). In this embodiment, the contact portion 248a of the drain electrode 248 connected to one pixel electrode 250 through the contact hole CH1 is located on the scanning line GL, and therefore does not substantially function as a light shield, similar to the first embodiment.
[0081] The switching element 240 of the second main pixel 202 of this embodiment is arranged along the scanning line GL as in the first embodiment (FIGS. 14 and 15). In this embodiment as well, two switching elements 240 are arranged on either side of an intersection P1 between the scanning line GL and the signal line DL (the third light-shielding line 272 and the fourth light-shielding line 274).
[0082] In this embodiment, the switching element 240 also has a light-shielding property. The configuration of the switching element 240 in this embodiment is similar to that of the switching element 240 in the first embodiment, except that the drain electrode 248 is not branched, and one drain electrode 248 is connected to one switching element 240 via a contact hole CH1 located on the scanning line GL.
[0083] The light shielding body 280 of this embodiment is surrounded by the first light shielding pattern 260 (the first light shielding line 262 and the second light shielding line 264) and the second light shielding pattern 270 (the third light shielding line 272 and the fourth light shielding line 274) in the same manner as the light shielding body 280 of the first embodiment, and is located between the intersection line CL that connects the intersection point P1 of the first light shielding pattern 260 and the second light shielding pattern 270 and extends in the X direction, and the symmetry axis SL of the first light shielding pattern 260 in the region S1 in which the interval L between the first light shielding line 262 and the second light shielding line 264 expands continuously from both sides in the X direction (FIG. 14). In addition, two light shielding bodies 280 are located in the region S1 between the intersection line CL and the symmetry axis SL in the X direction, and four light shielding bodies 280 are located within the region S1. The four light shielding bodies 280 are located line-symmetrically with respect to each of the X direction and the Y direction.
[0084] The light shielding body 280 of the present embodiment is formed of a dummy light shielding layer DM made of a light-shielding metal, organic material, etc. The light shielding body 280 (dummy light shielding layer DM) is formed on the main surface 210a of the second TFT substrate 210, for example, as shown in FIG.
[0085] In this embodiment, the configurations of the first light-shielding pattern 260 and the second light-shielding pattern 270 (the scanning lines GL and the signal lines DL) and the arrangement of the switching elements 240 and the light shields 280 are the same as those in embodiment 1. Therefore, like the liquid crystal display device 10 of embodiment 1, the liquid crystal display device 10 of this embodiment can suppress moire and can suppress display unevenness caused by the light shields (the switching elements 240 and the light shields 280).
[0086] <Embodiment 3> In the second liquid crystal display panel 200 of the first embodiment, two switching elements 240 are arranged on either side of an intersection P1 between the scanning line GL and the signal line DL. The switching element 240 may be arranged at the intersection P1 between the scanning line GL (first light-shielding pattern 260) and the signal line DL (second light-shielding pattern 270). In addition, some of the multiple light-shielding bodies 280 may be formed from the contact portion 248a of the drain electrode 248, and the other part of the multiple light-shielding bodies 280 may be formed from a dummy light-shielding layer DM.
[0087] The liquid crystal display device 10 of this embodiment includes a panel unit 50, a backlight 300, and a display control unit 400, similarly to the liquid crystal display device 10 of embodiment 1. The first liquid crystal display panel 100 and the second liquid crystal display panel 200 of this embodiment, including the first light-shielding pattern 260 and the second light-shielding pattern 270 (scanning lines GL and signal lines DL), the backlight 300, and the display control unit 400, are configured similarly to those of embodiment 1. Here, the second main pixel 202 and the light shielding body 280 of the second liquid crystal display panel 200 will be described.
[0088] In this embodiment, the second liquid crystal display panel 200 also has second main pixels 202 arranged in a matrix. Each second main pixel 202 of the second liquid crystal display panel 200 corresponds to 16 (4×4) first main pixels 102 of the first liquid crystal display panel 100.
[0089] As shown in Fig. 17, the second main pixel 202 of this embodiment has a rectangular shape and is divided into four regions 202A of two rows and two columns in the X and Y directions. As shown in Fig. 18, one pixel electrode 250 is arranged in each of the regions 202A. One pixel electrode 250 arranged in one region 202A is connected to one switching element 240. As in the first embodiment, one second main pixel 202 (four pixel electrodes 250) is driven by voltages (signals) from a pair of adjacent scanning lines GL and a pair of adjacent signal lines DL.
[0090] Each of the pixel electrodes 250 of the second main pixel 202 of this embodiment has a comb-tooth shape, as shown in FIG. 18. In this embodiment, one pixel electrode 250 is disposed in one region 202A. One pixel electrode 250 is connected to one switching element 240 (drain electrode 248) through a contact hole CH. In this embodiment, the contact portion 248a of the drain electrode 248 connected to the pixel electrode 250 through the contact hole CH forms a light shielding body 280, similar to the contact portion 248a connected to the pixel electrode 250 through the contact hole CH2 in the first embodiment.
[0091] The switching element 240 of the second main pixel 202 of this embodiment is disposed at an intersection P1 between the scanning line GL and the signal line DL, as shown in Fig. 17. In this embodiment as well, the switching element 240 has a light blocking property.
[0092] In this embodiment, too, as shown in FIG. 19, the gate electrode 242 of the switching element 240 is formed integrally with the scanning line GL. Moreover, the semiconductor layer 244 of the switching element 240 is provided in an island shape on the gate electrode 242 via a first insulating layer 292. The source electrode 246 of the switching element 240 is formed integrally with the signal line DL. The drain electrode 248 of the switching element 240 is connected to the pixel electrode 250 at the contact portion 248a via a contact hole CH (FIG. 18). The configurations of the first insulating layer 292, the second insulating layer 294, etc. are the same as those of the first embodiment. Moreover, the first insulating layer 292 is omitted in FIG. 19.
[0093] The light shielding body 280 of this embodiment is surrounded by the first light shielding pattern 260 (the first light shielding line 262 and the second light shielding line 264) and the second light shielding pattern 270 (the third light shielding line 272 and the fourth light shielding line 274) in the same manner as the light shielding body 280 of the first embodiment, and is located between the intersection line CL that connects the intersection point P1 of the first light shielding pattern 260 and the second light shielding pattern 270 and extends in the X direction, and the symmetry axis SL of the first light shielding pattern 260 in the region S1 in which the interval L between the first light shielding line 262 and the second light shielding line 264 expands continuously from both sides in the X direction (FIG. 17). In addition, two light shielding bodies 280 are located side by side in the X direction between the intersection line CL and the symmetry axis SL in the region S1, and four light shielding bodies 280 are located within the region S1. The four light shielding bodies 280 are located line-symmetrically with respect to each of the X direction and the Y direction. In this embodiment, one of the two light shielding bodies 280 aligned in the X direction is formed from a contact portion 248a of the drain electrode 248, which is connected to the pixel electrode 250 via a contact hole CH. The other of the two light shielding bodies 280 aligned in the X direction is formed from a dummy light shielding layer DM, similar to the light shielding body 280 of the second embodiment.
[0094] The configurations of the first light-shielding pattern 260 and the second light-shielding pattern 270 (the scanning wiring GL and the signal wiring DL) of this embodiment are the same as those of the first light-shielding pattern 260 and the second light-shielding pattern 270 of the first embodiment. Therefore, the liquid crystal display device 10 of this embodiment can also suppress moire. Furthermore, in this embodiment, the switching element 240 is disposed at the intersection P1 between the scanning wiring GL and the signal wiring DL, and the light shielding body 280 is positioned between the intersection line CL and the symmetry axis SL in the region S1, so that the interval of the dark portion formed due to the light shielding body (the switching element 240 and the light shielding body 280) is narrowed. Therefore, the liquid crystal display device 10 of this embodiment can also suppress display unevenness due to the dark portion. As described above, the liquid crystal display device 10 of this embodiment can suppress moire and display unevenness due to the light shielding body (the switching element 240 and the light shielding body 280) in the same manner as the liquid crystal display device 10 of the first embodiment.
[0095] <Embodiment 4> In the third embodiment, the switching element 240 is disposed at an intersection P1 between the scanning line GL and the signal line DL, and some of the light shields 280 are formed from contact portions 248a of the drain electrodes 248. The switching element 240 may be disposed at an intersection P1 between the scanning line GL and the signal line DL, and all of the light shields 280 may be formed from dummy light shield layers DM.
[0096] Here, a description will be given of the contact hole CH of the second main pixel 202 and the light shield 280. Other configurations of the liquid crystal display device 10 of this embodiment are similar to those of the third embodiment.
[0097] The contact hole CH of this embodiment is provided near the switching element 240, as shown in Figs. 20 and 21. When the first liquid crystal display panel 100 and the second liquid crystal display panel 200 are overlapped, the contact hole CH of this embodiment overlaps with the black matrix BM of the first liquid crystal display panel 100. The switching element 240 (contact portion 248a of the drain electrode 248) and the pixel electrode 250 of this embodiment are connected via the contact hole CH. In this embodiment, since the contact hole CH overlaps with the black matrix BM of the first liquid crystal display panel 100, the contact portion 248a of the drain electrode 248 does not substantially function as a light shield that blocks light incident on the sub-pixel 104 (first main pixel 102) of the first liquid crystal display panel 100.
[0098] The light shielding body 280 of this embodiment is entirely formed of a dummy light shielding layer DM. The configuration of the dummy light shielding layer DM of this embodiment is similar to that of the dummy light shielding layer of the second embodiment.
[0099] The light shielding body 280 of this embodiment is surrounded by the first light shielding pattern 260 (the first light shielding line 262 and the second light shielding line 264) and the second light shielding pattern 270 (the third light shielding line 272 and the fourth light shielding line 274) as in the first to third embodiments, and is located between the intersection line CL that connects the intersection point P1 of the first light shielding pattern 260 and the second light shielding pattern 270 and extends in the X direction, and the symmetry axis SL of the first light shielding pattern 260 in the region S1 in which the interval L between the first light shielding line 262 and the second light shielding line 264 expands continuously from both sides in the X direction (FIG. 20). In addition, two light shielding bodies 280 are located in the region S1 between the intersection line CL and the symmetry axis SL in the X direction, and four light shielding bodies 280 are located within the region S1. The four light shielding bodies 280 are located line-symmetrically with respect to each of the X direction and the Y direction.
[0100] In this embodiment, the configurations of the first light-shielding pattern 260 and the second light-shielding pattern 270 (the scanning lines GL and the signal lines DL) and the arrangement of the switching elements 240 and the light shielding bodies 280 are the same as those in embodiment 3. Therefore, like the liquid crystal display device 10 of embodiment 3, the liquid crystal display device 10 of this embodiment can suppress moire and also suppress display unevenness caused by the light shielding bodies (the switching elements 240 and the light shielding bodies 280).
[0101] <Embodiment 5> In the third embodiment, the switching element 240 is disposed at the intersection P1 between the scanning line GL and the signal line DL, and some of the light shields 280 are formed from contact holes CH. The switching element 240 may be disposed at the intersection P1 between the scanning line GL and the signal line DL, and all of the light shields 280 may be formed from the contact portion 248a of the drain electrode 248.
[0102] The liquid crystal display device 10 of this embodiment includes a panel unit 50, a backlight 300, and a display control unit 400, similar to the liquid crystal display device 10 of embodiments 1 to 4. The first liquid crystal display panel 100 and the second liquid crystal display panel 200 of this embodiment, including the first light-shielding pattern 260 and the second light-shielding pattern 270 (scanning lines GL and signal lines DL), the backlight 300, the display control unit 400, and the like, are configured similarly to those of embodiments 1 to 4. Here, the second main pixel 202 and the light shielding body 280 of the second liquid crystal display panel 200 will be described.
[0103] In this embodiment, the second liquid crystal display panel 200 also has second main pixels 202 arranged in a matrix. Each second main pixel 202 of the second liquid crystal display panel 200 corresponds to 16 (4×4) first main pixels 102 of the first liquid crystal display panel 100.
[0104] As shown in Fig. 22, the second main pixel 202 of this embodiment has a rectangular shape and is divided into four regions 202A of two rows and two columns in the X and Y directions. In this embodiment, as shown in Fig. 23, two pixel electrodes 250 are arranged in each of the regions 202A. The two pixel electrodes 250 arranged in one region 202A are connected to one switching element 240. As in the first embodiment, one second main pixel 202 (eight pixel electrodes 250) is driven by voltages (signals) from a pair of adjacent scanning lines GL and a pair of adjacent signal lines DL.
[0105] Each of the pixel electrodes 250 of the second main pixel 202 of this embodiment has a comb-tooth shape, as shown in FIG. 23. In this embodiment, two pixel electrodes 250 are arranged in one region 202A. The two pixel electrodes 250 are connected to one switching element 240. The pixel electrode 250 is connected to the switching element 240 (the contact portion 248a of the drain electrode 248) through a contact hole CH. In this embodiment, the contact portion 248a of the drain electrode 248 connected to the pixel electrode 250 through the contact hole CH forms the light shield 280, similar to the third embodiment.
[0106] The switching element 240 of the second main pixel 202 of this embodiment is disposed at an intersection P1 between the scanning line GL and the signal line DL (FIG. 22), similar to the switching element 240 of embodiment 4. The switching element 240 of this embodiment also has a light blocking property.
[0107] In this embodiment, as shown in FIG. 24, the gate electrode 242 of the switching element 240 is formed integrally with the scanning wiring GL. The semiconductor layer 244 of the switching element 240 is provided in an island shape on the gate electrode 242 via a first insulating layer 292. The source electrode 246 of the switching element 240 is formed integrally with the signal wiring DL. The drain electrode 248 of the switching element 240 is connected to the pixel electrode 250 at the contact portion 248a via a contact hole CH. In this embodiment, two drain electrodes 248 are provided sandwiching the source electrode 246, and each of the drain electrodes 248 is connected to each of the pixel electrodes 250 at the contact portion 248a (FIG. 23). The configurations of the first insulating layer 292, the second insulating layer 294, etc. are the same as those of the first embodiment. In FIG. 24, the first insulating layer 292 is omitted.
[0108] In this embodiment, since the two drain electrodes 248 sandwich the source electrode 246, the size of the switching element 240 can be reduced.
[0109] The light shielding body 280 of this embodiment is formed from a contact portion 248a of the drain electrode 248, which is connected to the pixel electrode 250 via a contact hole CH. The light shielding body 280 of this embodiment is arranged in the same manner as the light shielding body 280 of embodiments 1 to 4 (FIG. 22).
[0110] The configurations of the first light-shielding pattern 260 and the second light-shielding pattern 270 (the scanning lines GL and the signal lines DL) of this embodiment are similar to the configurations of the first light-shielding pattern 260 and the second light-shielding pattern 270 of embodiments 1 to 4. The arrangement of the switching elements 240 and the light-shielding body 280 of this embodiment is similar to the arrangement of the switching elements 240 and the light-shielding body 280 of embodiment 4. Therefore, the liquid crystal display device 10 of this embodiment can also suppress moire and display unevenness caused by the light-shielding body (the switching elements 240 and the light-shielding body 280).
[0111] Also, one switching element 240 is connected to two pixel electrodes 250. Therefore, even if a defect occurs in the pixel electrode 250, the defective area in the second main pixel 202 can be made small, thereby improving the manufacturing yield of the second liquid crystal display panel 200. Furthermore, since the two drain electrodes 248 sandwich the source electrode 246, the size of the switching element 240 can be made small.
[0112] <Modification> Although the embodiments have been described above, the present disclosure can be modified in various ways without departing from the gist of the present disclosure.
[0113] For example, in the embodiment, the first liquid crystal display panel 100 and the second liquid crystal display panel 200 operate in a lateral electric field mode. The operation mode of the first liquid crystal display panel 100 and the second liquid crystal display panel 200 is arbitrary.
[0114] In the embodiment, the first liquid crystal display panel 100 is located on the viewer side (+Z side), and the second liquid crystal display panel 200 is located on the opposite side to the viewer side surface of the first liquid crystal display panel 100. The second liquid crystal display panel 200 may be located on the viewer side, and the first liquid crystal display panel 100 may be located on the opposite side to the viewer side surface of the second liquid crystal display panel 200.
[0115] In the embodiment, the first polarizer 132 of the first liquid crystal display panel 100 also serves as a polarizer on the light exit side of the second liquid crystal display panel 200. The second liquid crystal display panel 200 may include a polarizer on the main surface 220b of the second opposing substrate 220.
[0116] In this embodiment, the stripe direction of the color filter 122 of the first liquid crystal display panel 100 is the Y direction. The stripe direction of the color filter 122 of the first liquid crystal display panel 100 may be the X direction.
[0117] In the embodiment, the second liquid crystal display panel 200 does not include a color filter and a black matrix, but the second liquid crystal display panel 200 may include a color filter and a black matrix.
[0118] In the embodiment, the first liquid crystal display panel 100 includes a first liquid crystal 130 that is a positive type nematic liquid crystal. The second liquid crystal display panel 200 includes a second liquid crystal 230 that is a positive type nematic liquid crystal. The first liquid crystal 130 may be a negative type nematic liquid crystal. The second liquid crystal 230 may be a negative type nematic liquid crystal.
[0119] In the embodiment, the first light-shielding lines 262 of the first light-shielding pattern 260 have a first flat portion 262c, and the second light-shielding lines 264 of the first light-shielding pattern 260 have a second flat portion 264c. The first light-shielding lines 262 do not have to have the first flat portion 262c, and the second light-shielding lines 264 do not have to have the second flat portion 264c. In other words, the first light-shielding lines 262 and the second light-shielding lines 264 are in a line-symmetrical relationship with respect to the X direction, and each may extend in a zigzag pattern in the X direction.
[0120] Meanwhile, the third light-shielding line 272 of the second light-shielding pattern 270 may have a third flat portion that connects the fifth inclined portion 272a and the sixth inclined portion 272b and extends parallel to the Y direction. Also, the fourth light-shielding line 274 of the second light-shielding pattern 270 may have a fourth flat portion that connects the seventh inclined portion 274a and the eighth inclined portion 274b and extends parallel to the Y direction.
[0121] Furthermore, the second light blocking pattern 270 (the third light blocking line 272 and the fourth light blocking line 274) may be linear.
[0122] In the embodiment, the scanning wiring GL forms the first light-shielding line 262 and the second light-shielding line 264 of the first light-shielding pattern 260. At least one of the first light-shielding line 262 and the second light-shielding line 264 of the first light-shielding pattern 260 may be formed from the scanning wiring GL. For example, when the first light-shielding line 262 is formed from the scanning wiring GL, the second light-shielding line 264 may be a low-resistance wiring that connects the common electrode CE. The second light-shielding line 264 may be a light-shielding body (light-shielding pattern) formed from an organic material having light-shielding properties.
[0123] In addition, the second light-shielding pattern 270 does not have to be formed from the signal wiring DL. For example, the second light-shielding pattern 270 may be a light-shielding body formed from an organic material having a light-shielding property. Furthermore, one of the third light-shielding line 272 and the fourth light-shielding line 274 of the second light-shielding pattern 270 may be formed from the signal wiring DL, and the other may be formed from an organic material having a light-shielding property.
[0124] In the embodiment, the source electrode 246 of the switching element 240 is linear, but the source electrode 246 may have a U-shape. For example, the switching element 240 of the third embodiment may have a U-shaped source electrode 246 as shown in Fig. 25. This allows the size of the switching element 240 to be reduced. In Fig. 25, the first insulating layer 292 is omitted.
[0125] In the embodiment, one second main pixel 202 of the second liquid crystal display panel 200 corresponds to 16 first main pixels 102 of the first liquid crystal display panel 100. The number of first main pixels 102 of the first liquid crystal display panel 100 to which one second main pixel 202 of the second liquid crystal display panel 200 corresponds is arbitrary.
[0126] In the embodiment, the same gate signals (gate signals with the same timing) from a pair of adjacent scanning lines GL and the same data signal from a pair of adjacent signal lines DL are input to a plurality of switching elements 240, thereby driving one second main pixel 202 of the second liquid crystal display panel 200. Each of a pair of adjacent scanning lines GL may supply a gate signal to the switching element 240 at a different timing, and each of a pair of adjacent scanning lines GL may supply a different data signal to the switching element 240. In this case, the configuration of one second main pixel 202 in the first embodiment (FIG. 6) corresponds to the configuration of four (2×2) second main pixels 202 in this modification (FIG. 26).
[0127] The contact holes CH, CH1, and CH2 may be formed across a plurality of comb teeth of the pixel electrode 250.
[0128] The contact portion 248a of the drain electrode 248 forming the light shielding body 280 is located at the bottom of the contact holes CH, CH1, and CH2. Therefore, it can be said that the contact hole CH2 in the first embodiment and the contact holes CH in the third and fifth embodiments function as a light shielding portion that blocks light.
[0129] In the first embodiment, the contact hole CH1 and the contact portion 248a of the drain electrode 248 connected to the pixel electrode 250 via the contact hole CH1 are formed on the scanning line GL (FIG. 9). On the other hand, the scanning line GL is not formed under the contact hole CH2 and the contact portion 248a of the drain electrode 248 connected to the pixel electrode 250 via the contact hole CH2 (FIG. 10). A light shield may be formed using the same material as the material forming the scanning line GL under the contact hole CH2 and the contact portion 248a of the drain electrode 248 connected to the pixel electrode 250 via the contact hole CH2. By forming this light shield, the cross-sectional structure of the contact hole CH1 and the cross-sectional structure of the contact hole CH2 become the same, so that variations in the shapes of the contact holes CH1 and CH2, poor connection between the pixel electrode 250 and the drain electrode 248, etc. can be suppressed.
[0130] The wiring width of the drain electrode 248 between the contact portion 248a (light shield 280) connected to the pixel electrode 250 via the contact holes CH and CH2 and the switching element 240 is preferably narrower than the wiring width of the signal line DL and the wiring width of the scanning line GL. Therefore, the light shielding effect of the drain electrode 248 between the contact portion 248a and the switching element 240 is lower than the light shielding effect of the contact portion 248a (light shield 280). However, by adjusting the wiring width of the drain electrode 248 between the contact portion 248a and the switching element 240, the entire drain electrode 248 may function as a light shield.
[0131] In the embodiment, the dummy light-shielding layer DM (light-shielding body 280) is formed on the main surface 210a of the second TFT substrate 210. The position where the dummy light-shielding layer DM is formed is arbitrary. For example, the dummy light-shielding layer DM may be formed on the first insulating layer 292. The dummy light-shielding layer DM may also be formed on the second opposing substrate 220.
[0132] It is preferable that a part of the boundary BL between two adjacent pixel electrodes 250 is aligned with the scanning line GL (first light-shielding pattern 260) or the signal line DL (second light-shielding pattern 270). For example, as shown in Fig. 27, a part of the boundary BL of the pixel electrode 250 of the first embodiment may overlap with the scanning line GL or the signal line DL. Note that in Fig. 27, the drain electrode 248, contact holes CH1, CH2, etc. are omitted for ease of understanding.
[0133] The switching element 240 of the second main pixel 202 may be disposed along the scanning line GL (the first light-shielding line 262 and the second light-shielding line 264). In the embodiment, the switching element 240 is inclined with respect to the X direction, but the switching element 240 may be formed along the X direction.
[0134] Although the preferred embodiments have been described above, the present disclosure is not limited to such specific embodiments, and the present disclosure includes the invention described in the claims and their equivalents. [Explanation of symbols]
[0135] 10 Liquid crystal display device, 50 Panel section, 100 First liquid crystal display panel, 102 First main pixel, 104 Sub-pixel, 104R Red pixel, 104G Green pixel, 104B Blue pixel, 110 First TFT substrate, 110a, 110b Main surface, 120 First opposing substrate, 120a, 120b Main surface, 122 Color filter, 130 First liquid crystal, 132 First polarizing plate, 134 Second polarizing plate, 136 First driver circuit, 138 Sealing material, 150 Adhesive layer, 200 Second liquid crystal display panel, 202 Second main pixel, 202A Region, 210 Second TFT substrate, 210a, 210b Main surface, 220 Second opposing substrate, 220a, 220b Main surface, 230 Second liquid crystal, 232 Third polarizing plate, 236 Second driver circuit, 238, sealing material, 240, switching element, 242, gate electrode, 244, semiconductor layer, 246, source electrode, 248, drain electrode, 248a, contact portion, 250, pixel electrode, 260, first light-shielding pattern, 262, first light-shielding line, 262a, first inclined portion, 262b, second inclined portion, 262c, first flat portion, 264, second light-shielding line, 264a, third inclined portion, 264b, fourth inclined portion, 264c, second flat portion, 270, second light-shielding pattern, 272, third light-shielding line, 272a, fifth inclined portion, 272b, sixth inclined portion, 274, fourth light-shielding line, 274a, seventh inclined portion, 274b, eighth inclined portion, 280, light-shielding body, 292, first insulating layer, 294, second insulating layer, 296, third insulating layer, 300, backlight, 400 Display control unit, 410 image data distribution unit, 420 first image signal generation unit, 422 first gradation conversion unit, 430 second image luminance signal generation unit, 440 second image signal generation unit, 442 calculation unit, 444 second gradation conversion unit, BM black matrix, CE common electrode, CH, CH1, CH2 contact hole, DL signal wiring, GL scanning wiring, DM dummy light shielding layer, P1 intersection point, P2 center, CL intersection line, SL symmetry axis, L1, L2, L3, L4, L5 interval, S1 area, D1, D2 length, PL1, PL2 straight line, PL3 center line, BL boundary
Claims
1. a first liquid crystal display panel in which a first main pixel having a plurality of sub-pixels of different colors is arranged and which displays color display elements; a second liquid crystal display panel overlapping the first liquid crystal display panel, in which second main pixels corresponding to a plurality of the first main pixels are arranged, and which displays monochrome display elements; the second liquid crystal display panel includes a switching element that drives the second main pixel and has a light-shielding property, a first light-shielding pattern that extends in a predetermined first direction and is repeatedly arranged and has a light-shielding property, a second light-shielding pattern that extends in a predetermined second direction perpendicular to the first direction and is repeatedly arranged and has a light-shielding property, and a plurality of light-shielding bodies that have a light-shielding property; the first light-shielding pattern includes a first light-shielding line extending in the first direction and having a first inclined portion inclined with respect to the first direction and a second inclined portion inclined with respect to the first direction in a direction opposite to the first inclined portion; and a second light-shielding line adjacent to the first light-shielding line and axisymmetric with the first light-shielding line with respect to the first direction, each of the light-shielding bodies is surrounded by the first light-shielding pattern and the second light-shielding pattern, and is located between an intersection line that connects intersections of the first light-shielding pattern and the second light-shielding pattern and extends in the first direction, and an axis of symmetry of the first light-shielding pattern, in a region in which a distance between the first light-shielding line and the second light-shielding line continuously expands from both sides in the first direction; At least one of the first light-shielding line and the second light-shielding line is formed from a scanning line of the second liquid crystal display panel. LCD display device.
2. the second light-shielding pattern includes a third light-shielding line extending in the second direction and a fourth light-shielding line extending in the second direction and adjacent to the third light-shielding line, At least one of the third light-shielding line and the fourth light-shielding line is formed from a signal line of the second liquid crystal display panel. The liquid crystal display device according to claim 1 .
3. At least a part of the plurality of light shields is formed from a contact portion of a drain electrode of the switching element, the contact portion being connected to a pixel electrode of the second main pixel. The liquid crystal display device according to claim 1 .
4. One of the switching elements is connected to a plurality of the pixel electrodes. The liquid crystal display device according to claim 3 .
5. the second main pixel has a plurality of pixel electrodes; At least a part of the boundary between the plurality of pixel electrodes is aligned along the first light-shielding pattern or the second light-shielding pattern. The liquid crystal display device according to claim 1 .
6. The light blocking bodies are arranged two by two between the intersection line and the axis of symmetry of the first light blocking pattern. The liquid crystal display device according to claim 1 .
7. the first light-shielding line has a first flat portion that connects the first inclined portion and the second inclined portion and extends parallel to the first direction; the second light-shielding line has a third inclined portion facing the first inclined portion, a fourth inclined portion facing the second inclined portion, and a second flat portion connecting the third inclined portion and the fourth inclined portion and extending parallel to the first direction, The liquid crystal display device according to claim 1 .
8. When viewed in a plan view, a center of the light shield is located away from a center line of the first flat portion or the second flat portion extending in the first direction by a distance equivalent to one of the sub-pixels in the second direction. The liquid crystal display device according to claim 7.
9. The light blocking bodies are arranged two by two between the intersection line and the axis of symmetry of the first light blocking pattern, When viewed in a plan view, each of the light blocking bodies is located on a straight line that connects one end of the first flat portion and one end of the second flat portion and extends in the second direction, or on a straight line that connects the other end of the first flat portion and the other end of the second flat portion and extends in the second direction. The liquid crystal display device according to claim 7.
10. a distance between centers of the light shields arranged in pairs in the first direction is equal to one of the sub-pixels; 10. The liquid crystal display device according to claim 6 or 9.
Citation Information
Patent Citations
Display device
JP2023000275A