LCD panels, display modules and electronic devices

Abstract

The liquid crystal display panel, display module, and electronic device relate to the field of display technology. The liquid crystal display panel includes a first region (10) and a second region (11), wherein the transmittance of the first region (10) is greater than that of the second region (11); the liquid crystal display panel includes a plurality of sub-pixels (20); the plurality of sub-pixels (20) includes a first color sub-pixel (21) and a second color sub-pixel (22), wherein the transmittance of the first color sub-pixel (21) is greater than that of the second color sub-pixel (22), and the area of ​​the first color sub-pixel (21) is greater than that of the second color sub-pixel (22); the plurality of sub-pixels (20) also includes a first region sub-pixel (12) and a second region sub-pixel (13) of the same color, wherein the first region sub-pixel (12) is located within the first region (10), and the second region sub-pixel (13) is located within the second region (11), wherein the thickness of the color resist layer of the first region sub-pixel (12) is less than or equal to the thickness of the color resist layer of the second region sub-pixel (13).

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a liquid crystal display panel, display module and electronic device. Background Technology

[0002] LCD panels, as a widely used flat panel display, occupy an important position in the display field. Furthermore, under-display cameras completely integrate the front-facing camera under the screen, increasing the screen-to-body ratio. Summary of the Invention

[0003] This disclosure provides a liquid crystal display panel, which includes a first region and a second region, wherein the transmittance of the first region is greater than the transmittance of the second region;

[0004] The liquid crystal display panel includes multiple sub-pixels;

[0005] The plurality of sub-pixels includes a first color sub-pixel and a second color sub-pixel, wherein the transmittance of the first color sub-pixel is greater than that of the second color sub-pixel, and the area of ​​the first color sub-pixel is greater than that of the second color sub-pixel.

[0006] The plurality of sub-pixels also includes a first region sub-pixel and a second region sub-pixel with the same color. The first region sub-pixel is located in the first region, and the second region sub-pixel is located in the second region. The color resist layer thickness of the first region sub-pixel is less than or equal to the color resist layer thickness of the second region sub-pixel.

[0007] In one alternative implementation, the first color sub-pixel emits green light, and the second color sub-pixel emits red or blue light.

[0008] In one optional implementation, the plurality of sub-pixels further includes a third color sub-pixel, the transmittance of which is greater than that of the second color sub-pixel and less than that of the first color sub-pixel, and the area of ​​which is greater than or equal to that of the second color sub-pixel and less than or equal to that of the first color sub-pixel.

[0009] In one alternative implementation, the first color sub-pixel emits green light, the second color sub-pixel emits blue light, and the third color sub-pixel emits red light.

[0010] In one optional implementation, the liquid crystal display panel includes an array substrate and a cell substrate disposed opposite to each other. The array substrate includes a first substrate and a first electrode layer, an insulating layer and a second electrode layer stacked on the first substrate on the side near the cell substrate.

[0011] The first electrode layer includes a separately disposed touch electrode and a pixel electrode, and the second electrode layer includes a common electrode, wherein the touch electrode and the common electrode are connected to the same voltage output terminal;

[0012] The orthographic projection of the second electrode layer on the first substrate does not overlap with the orthographic projection of the touch electrode on the first substrate, and the orthographic projection of the second electrode layer on the first substrate does not overlap with the orthographic projection of the spacing region between the touch electrode and the pixel electrode on the first substrate.

[0013] In one optional implementation, the liquid crystal display panel includes an array substrate and a cell substrate disposed opposite to each other, and an isolation post is disposed between the array substrate and the cell substrate. In the direction from the array substrate to the cell substrate, the isolation post has a first surface and a second surface disposed opposite to each other.

[0014] The edge of the first surface protrudes relative to the orthographic projection edge of the second surface onto the first surface, and the protrusion is less than or equal to 3 μm.

[0015] In one optional implementation, the liquid crystal display panel further includes a light-shielding layer disposed on the array substrate and / or the cell substrate. The orthographic projection edge of the light-shielding layer on the plane containing the first surface protrudes relative to the edge of the first surface, and the protrusion is greater than or equal to 2 μm and less than or equal to 10 μm.

[0016] This disclosure provides a display module, including a backlight module and a liquid crystal display panel as described in any one of the claims, wherein the backlight module is disposed away from the light-emitting side of the liquid crystal display panel, and the backlight module is used to provide backlight to the liquid crystal display panel;

[0017] The backlight module has an opening area, the orthographic projection of which onto the display panel is located within the first area. The opening area is used to place a camera module for capturing images.

[0018] In one alternative implementation, the backlight module includes a first light source, which is a light-emitting diode using red and green phosphors.

[0019] In one optional implementation, the backlight module includes a light guide plate and at least one prism sheet, wherein the at least one prism sheet is located on the light-emitting side of the light guide plate;

[0020] The prism sheet includes a base film and a plurality of prism structures disposed on the side of the base film opposite to the light guide plate. The plurality of prism structures include at least one first prism structure and at least one second prism structure. The at least one second prism structure is located between the at least one first prism structure and the opening area. The first prism structure is used to cause light incident on the first prism structure to exit into the second area, and the second prism structure is used to cause at least a portion of the light incident on the second prism structure to exit into the first area.

[0021] In one alternative implementation, each of the prism structures has a slope near the opening region, and the angle between the slope and the base film is a slope angle.

[0022] The slope angle of the second prism structure farther away from the opening area is greater than the slope angle of the second prism structure closer to the opening area, but smaller than the slope angle of the first prism structure.

[0023] In one alternative implementation, the slope angles of each of the first prism structures are the same.

[0024] In one alternative implementation, the slope angle of the first prism structure is 45°.

[0025] In one alternative implementation, the backlight module further includes a second light source located on the end face of the light guide plate near the opening area.

[0026] In one alternative implementation, the second light source is a light-emitting diode using red and green phosphors.

[0027] This disclosure provides an electronic device, wherein the electronic device includes a camera module and a display module as described in any one of the claims, the camera module being located within the opening area of ​​the backlight module.

[0028] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the scale in the drawings is for illustration only and does not represent the actual scale.

[0030] Figure 1 A schematic diagram of a planar structure of a liquid crystal display panel is shown.

[0031] Figure 2 A schematic diagram of a sub-pixel structure in a liquid crystal display panel is shown.

[0032] Figure 3 A schematic diagram of a sub-pixel structure in another liquid crystal display panel is shown.

[0033] Figure 4 A schematic cross-sectional view of a liquid crystal display panel is shown.

[0034] Figure 5 A schematic cross-sectional view of another liquid crystal display panel is shown.

[0035] Figure 6 A schematic diagram of a planar structure of an array substrate in a liquid crystal display panel is shown.

[0036] Figure 7 The transmittance simulation results of two liquid crystal display panels are shown schematically.

[0037] Figure 8 The simulation results of liquid crystal deflection for two liquid crystal display panels are shown schematically.

[0038] Figure 9 A schematic diagram of a planar structure of an isolation column and a light-shielding layer is shown.

[0039] Figure 10 A schematic cross-sectional view of a display module is shown.

[0040] Figure 11 A schematic diagram of the cross-sectional structure of a prism sheet is shown.

[0041] Figure 12 A schematic cross-sectional view of a backlight module is shown. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0043] In related technologies, the transmittance of liquid crystal display panels is generally around 6%, which does not meet the transmittance requirement of greater than or equal to 15% for under-display cameras. Therefore, in order to install an under-display camera, the transmittance of the liquid crystal display panel needs to be improved.

[0044] One embodiment of this disclosure provides a liquid crystal display panel, see reference 1 Figure 1 The liquid crystal display panel includes a first region 10 and a second region 11, wherein the transmittance of the first region 10 is greater than that of the second region 11.

[0045] Specifically, the first area 10 can be the under-display camera area, and the second area 11 can be the normal display area.

[0046] For example, the second region 11 can be set to surround the first region 10, such as... Figure 1 As shown, this disclosure does not limit it.

[0047] Reference Figure 2 The liquid crystal display panel includes multiple sub-pixels 20. These multiple sub-pixels 20 can, for example, be arranged in an array within the liquid crystal display panel.

[0048] In this embodiment, the plurality of sub-pixels 20 include a first color sub-pixel 21 and a second color sub-pixel 22. The transmittance of the first color sub-pixel 21 is greater than that of the second color sub-pixel 22, and the area of ​​the first color sub-pixel 21 is greater than that of the second color sub-pixel 22.

[0049] The first color sub-pixel 21 and the second color sub-pixel 22 emit different colors. The first color sub-pixel 21 can emit colors such as red, green, or blue. The second color sub-pixel 22 can emit colors such as red, green, or blue.

[0050] By differentiating the areas of the first color sub-pixel 21 and the second color sub-pixel 22 with different light-emitting colors, the area of ​​the first color sub-pixel 21 with high transmittance is larger than the area of ​​the second color sub-pixel 22 with low transmittance. Compared with the case where the areas of the first color sub-pixel 21 and the second color sub-pixel 22 are the same, the transmittance of the liquid crystal display panel can be improved.

[0051] like Figure 1 As shown, the multiple sub-pixels 20 also include a first region sub-pixel 12 and a second region sub-pixel 13 of the same color. The first region sub-pixel 12 is located in the first region 10, and the second region sub-pixel 13 is located in the second region 11. The color resist layer thickness of the first region sub-pixel 12 is less than or equal to the color resist layer thickness of the second region sub-pixel 13.

[0052] In this embodiment, the first region sub-pixel 12 and the second region sub-pixel 13 emit the same color. The emission color of the first region sub-pixel 12 and the second region sub-pixel 13 can both be red, green, or blue, etc., and this disclosure does not limit this.

[0053] In practice, a halftone mask can be used to expose and develop the color resist layer. By controlling the exposure amount, a color resist layer with a thinner thickness than the second region 11 can be formed in the first region 10.

[0054] For the first region sub-pixel 12 and the second region sub-pixel 13 with the same emission color, the color resist layer thickness of the first region sub-pixel 12 located in the first region 10 is less than or equal to the color resist layer thickness of the second region sub-pixel 13 located in the second region 11. By setting a thinner color resist layer in the sub-pixel 20 of the first region 10, the transmittance of the first region 10 can be improved, thereby improving the imaging quality of the under-display camera.

[0055] In a specific implementation, the first color sub-pixel 21 and the second color sub-pixel 22 can have multiple color combinations.

[0056] In one alternative implementation, such as Figure 2 As shown, the first color sub-pixel 21 emits green light, and the second color sub-pixel 22 emits blue light. That is, the first color sub-pixel 21 is the green sub-pixel G, and the second color sub-pixel 22 is the blue sub-pixel B.

[0057] Figure 2 The pixel unit shown is composed of a green sub-pixel G, a blue sub-pixel B, and a red sub-pixel R. Figure 2 The dashed line in the diagram represents the boundary line when the area ratio of red sub-pixel R, green sub-pixel G, and blue sub-pixel B is 1:1:1.

[0058] In a pixel unit composed of a green sub-pixel G, a blue sub-pixel B, and a red sub-pixel R, the green color resist has the highest transmittance, typically around 60%, while the blue color resist has the lowest, typically around 10%. Therefore, based on an area ratio of 1:1:1, increasing the area of ​​the green sub-pixel G and decreasing the area of ​​the blue sub-pixel B, making the area of ​​the green sub-pixel G larger than the area of ​​the blue sub-pixel B, can effectively improve light transmittance.

[0059] When the ratio of the area of ​​the green sub-pixel G to the area of ​​the blue sub-pixel B is 1.1:0.9, the transmittance of the liquid crystal display panel can be increased by 3% to 5%.

[0060] With the total area of ​​the pixel unit remaining unchanged, since the green color resist has the highest transmittance and the blue color resist has the lowest transmittance, when the light emission color of the first color sub-pixel 21 is green and the light emission color of the second color sub-pixel 22 is blue, the light transmittance can be maximized.

[0061] In another alternative implementation, the first color sub-pixel 21 emits green light, and the second color sub-pixel 22 emits red light. That is, the first color sub-pixel 21 is a green sub-pixel G, and the second color sub-pixel 22 is a red sub-pixel R.

[0062] In a pixel unit composed of a green sub-pixel G, a blue sub-pixel B, and a red sub-pixel R, the green color resist has the highest transmittance, typically around 60%, while the red color resist has a lower transmittance, typically around 30%. Therefore, based on an area ratio of 1:1:1, increasing the area of ​​the green sub-pixel G and decreasing the area of ​​the red sub-pixel R, making the area of ​​the green sub-pixel G larger than the area of ​​the red sub-pixel R, can effectively improve light transmittance.

[0063] In a specific implementation, the first color sub-pixel 21 can also be a red sub-pixel R, and the second color sub-pixel 22 can be a blue sub-pixel B. Since the transmittance of red color resist is greater than that of blue color resist, the transmittance of light can also be effectively improved by setting the area of ​​red sub-pixel R to be larger than the area of ​​blue sub-pixel B.

[0064] In another alternative implementation, refer to Figure 3 The multiple sub-pixels 20 may also include a third color sub-pixel 31, the transmittance of the third color sub-pixel 31 is greater than the transmittance of the second color sub-pixel 22 and less than the transmittance of the first color sub-pixel 21, and the area of ​​the third color sub-pixel 31 is greater than or equal to the area of ​​the second color sub-pixel 22 and less than or equal to the area of ​​the first color sub-pixel 21.

[0065] Optionally, such as Figure 3 As shown, the first color sub-pixel 21 emits green light, the second color sub-pixel 22 emits blue light, and the third color sub-pixel 31 emits red light. That is, the first color sub-pixel 21 is the green sub-pixel G, the second color sub-pixel 22 is the blue sub-pixel B, and the third color sub-pixel 31 is the red sub-pixel R.

[0066] Figure 3 The dashed line in the diagram represents the boundary line when the area ratio of the green sub-pixel G, the blue sub-pixel B, and the red sub-pixel R is 1:1:1.

[0067] In this implementation, based on an area ratio of 1:1:1, the area of ​​the green sub-pixel G is increased while the area of ​​the blue sub-pixel B is decreased, so that the area of ​​the green sub-pixel G is larger than the area of ​​the blue sub-pixel B, thereby improving light transmittance.

[0068] In this implementation, the area of ​​the red sub-pixel R can remain unchanged; or the area of ​​the red sub-pixel R can be increased, but the increase ratio cannot exceed that of the green sub-pixel G, so that the area of ​​the red sub-pixel R is less than or equal to the area of ​​the green sub-pixel G; or the area of ​​the red sub-pixel R can be reduced, such as... Figure 3 As shown, but the reduction ratio does not exceed that of the blue sub-pixel B, so that the area of ​​the red sub-pixel R is greater than or equal to the area of ​​the blue sub-pixel B.

[0069] This implementation method effectively improves the transmittance of the liquid crystal display panel by increasing the area of ​​the sub-pixels with higher color resistivity and decreasing the area of ​​the sub-pixels with lower color resistivity.

[0070] In one alternative implementation, refer to Figure 4 and Figure 5 The liquid crystal display panel includes an array substrate 41 and a cell substrate 42 disposed opposite to each other. The array substrate 41 and the cell substrate 42 can be bonded together with an adhesive to confine the liquid crystal within the area enclosed by the adhesive. The array substrate 41 may include a first substrate 43, and a first electrode layer 44, an insulating layer 45, and a second electrode layer 46 stacked on the side of the first substrate 43 near the cell substrate 42.

[0071] The first electrode layer 44 includes a touch electrode 441 and a pixel electrode 442 that are separately disposed, and the second electrode layer 46 includes a common electrode 461. The touch electrode 441 and the common electrode 461 are connected to the same voltage output terminal.

[0072] The touch electrode 441 and the pixel electrode 442 are located on the same layer and are insulated from each other; their materials can be the same or different. The touch electrode 441 is used to transmit touch signals. The pixel electrode 442 is used to transmit display signals.

[0073] Touch electrode 441 and common electrode 461 can be connected to a common voltage output terminal respectively. Pixel electrode 442 can be connected to the drain of the thin-film transistor in each sub-pixel 20.

[0074] Liquid crystal is filled between the array substrate 41 and the cell substrate 42, and a horizontal electric field for driving the liquid crystal deflection can be formed between the pixel electrode 442 and the common electrode 461 or the touch electrode 441.

[0075] like Figure 4As shown, there is a gap region BB' between the touch electrode 441 and the pixel electrode 442. The inventors discovered that when the common electrode 461 overlaps with the orthographic projection of the gap region BB' on the first substrate 43, the common electrode 461 at that location will shield the horizontal electric field formed between the pixel electrode 442 and the touch electrode 441, resulting in insufficient driving force for the deflection of liquid crystal molecules, which in turn leads to a decrease in transmittance.

[0076] To solve the above problems, such as Figure 5 As shown, the orthographic projection of the second electrode layer 46 on the first substrate 43 does not overlap with the orthographic projection of the spacing region BB' between the touch electrode 441 and the pixel electrode 442 on the first substrate 43. Thus, at the position corresponding to the spacing region BB', an effective horizontal electric field can be formed between the pixel electrode 442 and the touch electrode 441, increasing the deflection driving force of the liquid crystal molecules and thereby improving light transmittance.

[0077] Figure 5 The cross-sectional view shown is located on the array substrate as follows: Figure 6 As shown. (Refer to...) Figure 7 a shows Figure 4 The transmittance simulation results of the structure shown are referenced. Figure 7 b shows Figure 5 The transmittance simulation results of the structure shown are consistent with... Figure 4 Compared to the structure shown, Figure 5 The structure shown exhibits significantly increased transmittance in the spacer region BB'.

[0078] Reference Figure 8 'a' in the text indicates Figure 4 The simulation results of liquid crystal deflection of the structure shown are referenced. Figure 8 b in the text indicates Figure 5 The simulation results of liquid crystal deflection of the structure shown are consistent with those of the structure shown. Figure 4 Compared to the structure shown, Figure 5 The structure shown has a larger deflection angle of liquid crystal molecules in the spacer region BB', resulting in higher light transmittance.

[0079] In addition, such as Figure 4 and Figure 5 As shown, the orthographic projection of the second electrode layer 46 on the first substrate 43 does not overlap with the orthographic projection of the touch electrode 441 on the first substrate 43. In this way, the second electrode layer 46 can avoid shielding the touch signal on the touch electrode 441 and improve touch sensitivity.

[0080] Using the technical solution provided in this implementation, the transmittance can be improved by 5% to 8% when one touch electrode 441 is set for each sub-pixel; and by 2% to 4% when three sub-pixels share one touch electrode 441.

[0081] In one alternative implementation, such as Figure 4 and Figure 5 As shown, the liquid crystal display panel includes an array substrate 41 and a cell substrate 42 disposed opposite to each other. An isolation post 47 is also disposed between the array substrate 41 and the cell substrate 42. In the direction from the array substrate 41 to the cell substrate 42, that is, in the first direction shown in the figure, the isolation post 47 has a first surface s1 and a second surface s2 disposed opposite to each other.

[0082] The isolation pillar 47 is used to support the space between the array substrate 41 and the cell substrate 42, maintaining the uniformity and stability of the liquid crystal cell thickness.

[0083] The isolation pillar 47 can be disposed on the array substrate 41. In this case, the first surface s1 is the surface closer to the array substrate 41, and the second surface s2 is the surface farther from the array substrate 41. The isolation pillar 47 can also be disposed on the cell substrate 42, such as... Figure 4 and Figure 5 As shown, the first surface s1 is the surface away from the array substrate 41, and the second surface s2 is the surface close to the array substrate 41.

[0084] like Figure 9 As shown in a, the edge of the first surface s1 protrudes from the orthographic projection edge of the second surface s2 on the first surface s1, and the protrusion amount d1 can be greater than 3μm or 4μm and less than or equal to 5μm.

[0085] Furthermore, such as Figure 9 As shown in b, the edge of the first surface s1 protrudes from the orthographic projection edge of the second surface s2 onto the first surface s1, and the protrusion amount d1 can be less than or equal to 3 μm.

[0086] Light leakage occurs because the liquid crystal molecules near the isolation pillar 47 are arranged randomly. In a specific implementation, such as... Figure 4 and Figure 5 As shown, a light-shielding layer 48 can be set at the light leakage position of the liquid crystal display panel to ensure picture quality.

[0087] like Figure 9 As shown in b, by reducing the protrusion d1 of the edge of the first surface s1 relative to the edge of the second surface s2, the coverage area of ​​the light-shielding layer 48 can be reduced without sacrificing the contact area (i.e., the area of ​​the second surface s2), thereby increasing the aperture ratio and improving the transmittance of the liquid crystal display panel. For products with a pixel density of 250 pixels / inch, the transmittance can be increased by 2% to 4% using the isolation pillar 47 structure provided in this implementation.

[0088] In a specific implementation, the light-shielding layer 48 can be disposed on the array substrate 41 and / or the cell substrate 42. That is, the light-shielding layer 48 can be disposed on the array substrate 41 or on the cell substrate 42 (e.g., Figure 4 and Figure 5 (as shown), or partially disposed on the array substrate 41 and partially disposed on the cell substrate 42.

[0089] The light-shielding layer 48 has its orthographically projected edge on the plane containing the first surface s1 protruding relative to the edge of the first surface s1, and the protrusion amount d2 can be greater than or equal to 2μm and less than or equal to 10μm. For example, the protrusion amount d2 can be 3μm, 4μm, or 5μm. By setting the light-shielding layer 48 to completely cover the isolation column 47, the effect of blocking light leakage is achieved.

[0090] It should be noted that the amount of protrusion of one edge relative to another mentioned above refers to the distance between the two edges.

[0091] The liquid crystal display panel disclosed herein can achieve a transmittance of 15% in the first area without increasing the number of photomasks or the complexity of the process, thereby reducing the color gamut loss caused by the thinning of the color resist layer and simultaneously meeting the imaging and display requirements of the under-display camera area.

[0092] This disclosure also provides a display module, such as Figure 10 As shown, the display module includes a backlight module 101 and a liquid crystal display panel 102 as provided in any embodiment. The backlight module 101 is disposed away from the light-emitting side of the liquid crystal display panel 102, and the backlight module 101 is used to provide backlight to the liquid crystal display panel 102.

[0093] The backlight module 101 has an opening area, the orthographic projection of which onto the display panel is located within the first region 10. The opening area is used to house a camera module, such as a sensor. This camera module is used to capture images.

[0094] Those skilled in the art will understand that this display module has the advantages of the front liquid crystal display panel 102.

[0095] The backlight module 101 can provide backlight to the second area 11 of the liquid crystal display panel 102, and can also provide backlight to the first area 10.

[0096] In the liquid crystal display panel 102, because the color resist layer of the sub-pixel 20 located in the first region 10 is thinner, the color gamut of the first region 10 is lower. For example, the NTSC (National Television Standards Committee) color gamut of the second region 11 is 70%, while the NTSC color gamut of the first region 10 may only be 45%.

[0097] like Figure 10 As shown, the backlight module 101 may include a first light source 103, which may be, for example, a light-emitting diode (LED).

[0098] In a specific implementation, the backlight module 101 may further include a light guide plate 104. The backlight module 101 may be side-lit; correspondingly, the first light source 103 may be located on the end face of the light guide plate 104 along the thickness direction, such as... Figure 10 As shown, the first light source 103 is located on the end face of the light guide plate 104 away from the hole area. The backlight module 101 can also be a direct-lit type; correspondingly, the first light source 103 can be located on the surface of the light guide plate 104 away from the liquid crystal display panel. This disclosure does not limit the specific position of the first light source in the backlight module.

[0099] Optionally, the first light source 103 can be a light-emitting diode using red and green phosphors.

[0100] To produce white light from the first light source 103, a blue LED chip can be used, for example. The blue light generated by the blue LED chip excites phosphors of different colors to achieve the effect of white light. Commonly used phosphors include yellow phosphors, yellow-red phosphors, red-green phosphors, and potassium fluorosilicate phosphors.

[0101] Using red and green phosphors allows for a reduction in the thickness of the color resist layer, meeting the requirements of high color gamut products while increasing transmittance by approximately 40%. Because this solution improves backlight utilization, APF polarizers are unnecessary in some high-brightness, low-power products, thus reducing costs.

[0102] Optionally, such as Figure 10 As shown, the backlight module 101 may further include at least one prism sheet 105, which is located on the light-emitting side of the light guide plate 104. The light-emitting side of the light guide plate 104 is the side of the light guide plate 104 closest to the liquid crystal display panel 102.

[0103] Optionally, refer to Figure 11 A schematic diagram of the cross-sectional structure of a prism sheet is shown. Figure 11As shown, the prism sheet 105 may include a base film 1101 and a plurality of prism structures disposed on the side of the base film 1101 away from the light guide plate 104. The plurality of prism structures include at least one first prism structure 1102 and at least one second prism structure 1103. The at least one second prism structure 1103 is located between the at least one first prism structure 1102 and the opening area. The first prism structure 1102 is used to cause light incident on the first prism structure 1102 to exit into the second region 11, and the second prism structure 1103 is used to cause at least a portion of the light incident on the second prism structure 1103 to exit into the first region 10.

[0104] like Figure 10 and Figure 11 As shown, in the prism sheet 105, the first prism structure 1102 and the second prism structure 1103 are triangular protrusions on the side near the liquid crystal display panel 102, which are not limited in this disclosure.

[0105] like Figure 10 and Figure 11 As shown, the first prism structure 1102 is located on the side of the dividing line a1 far away from the aperture area. The incident light rays that originally diverged in all directions are then incident on the second area 11 of the liquid crystal display panel 102 with a smaller divergence angle after passing through the first prism structure 1102, thereby achieving the effect of axial brightness enhancement.

[0106] like Figure 10 and Figure 11 As shown, the second prism structure 1103 is located on the side of the dividing line a1 near the opening area. The incident light rays that originally diverged in all directions are partially or completely incident on the first area 10 of the liquid crystal display panel 102 after passing through the second prism structure 1103, thereby providing backlight for the first area 10 of the liquid crystal display panel 102.

[0107] In this implementation, by differentiating the prism structure in the prism sheet 105, the prism structure near the opening area can deflect the incident light to the direction of the first area, thereby improving the brightness of the first area 10.

[0108] Optionally, such as Figure 11 As shown, each prism structure has an inclined surface s3 near the opening region, and the angle between the inclined surface s3 and the base film 1101 is the slope angle θ. Among them, the slope angle θ of the second prism structure 1103 far away from the opening region can be greater than the slope angle θ of the second prism structure 1103 near the opening region, and smaller than the slope angle θ of the first prism structure 1102.

[0109] That is, the slope angle θ of the second prism structure 1103 is smaller than the slope angle θ of the first prism structure 1102. Furthermore, in the direction near the opening area (e.g....) Figure 11As shown by the arrow in the image, the slope angle θ of the second prism structure 1103 gradually decreases.

[0110] Optionally, the slope angle θ of each of the first prism structures 1102 is the same; for example, the slope angle θ of each of the first prism structures 1102 is 45°. In this case, the slope angle θ of each of the second prism structures 1103 is less than 45°.

[0111] Reference Figure 12 The propagation paths of the first ray L1 and the second ray L2 are shown. Figure 12 As shown, the backlight module 101 may further include a diffuser sheet 1201 located between the light guide plate 104 and the prism sheet 105, and the backlight module 101 includes two prism sheets 105, namely an upper prism sheet 1202 and a lower prism sheet 1203. The lower prism sheet 1203 is located on the side of the upper prism sheet 1202 near the light guide plate 104. The structures of the upper prism sheet 1202 and the lower prism sheet 1203 may be the same or different, and this disclosure does not limit them.

[0112] In this configuration, the first light ray L1 and the second light ray L2 emerge from the light-emitting surface of the light guide plate 104 at the same angle. The first light ray L1 passes sequentially through the diffuser 1201, the first prism structure 1102 of the lower prism sheet 1203, and the first prism structure 1102 of the upper prism sheet 1202, and finally enters the second region 11 of the liquid crystal display panel 102 in the normal direction. The second light ray L2 passes sequentially through the diffuser 1201, the second prism structure 1103 of the lower prism sheet 1203, and the second prism structure 1103 of the upper prism sheet 1202, and finally enters the first region 10 of the liquid crystal display panel 102 at an angle.

[0113] Optionally, such as Figure 10 As shown, the backlight module 101 may also include a second light source 106.

[0114] The second light source 106 can be, for example, a light-emitting diode (LED). In a specific implementation, several LEDs or mini LEDs can be arranged around the opening area, and the specific number can be determined according to the size of the opening area.

[0115] Specifically, the second light source 106 can be located on the end face of the light guide plate 104 near the opening area. The position of the second light source 106 corresponds to the second prism structure 1103, thereby improving the backlight brightness of the area and compensating for the light attenuation caused by the second prism structure 1103 deflecting the incident light to the first area 10, thus improving the uniformity of backlight brightness.

[0116] Optionally, the second light source 106 can be a light-emitting diode using red and green phosphors. In specific implementations, the second light source 106 and the first light source 103 can be the same or different. When both the second light source 106 and the first light source 103 use light-emitting diodes with red and green phosphors, the color gamut of the displayed image can be improved.

[0117] This disclosure also provides an electronic device including a camera module and a display module as provided in any embodiment, wherein the camera module is located in the opening area of ​​the backlight module.

[0118] Those skilled in the art will understand that this electronic device has the advantages of a front-mounted liquid crystal display panel.

[0119] It should be noted that the electronic device in this embodiment can be any product or component with 2D or 3D display function, such as electronic paper, mobile phone, tablet computer, television, laptop computer, digital photo frame, or navigator.

[0120] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0121] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0122] The above provides a detailed description of a liquid crystal display panel, display module, and electronic device provided by this disclosure. Specific examples have been used to illustrate the principles and implementation methods of this disclosure. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this disclosure. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this disclosure. Therefore, the content of this specification should not be construed as a limitation of this disclosure.

[0123] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0124] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

[0125] The terms "an embodiment," "embodiment," or "one or more embodiments" as used herein mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this disclosure. Furthermore, please note that the examples of the phrase "in one embodiment" do not necessarily all refer to the same embodiment.

[0126] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this disclosure may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0127] In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This disclosure can be implemented by means of hardware comprising a plurality of different elements and by means of a suitably programmed computer. In a unit claim enumerating a plurality of means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A liquid crystal display panel, wherein, The liquid crystal display panel comprises a first area and a second area, the transmittance of the first area is greater than that of the second area; The liquid crystal display panel comprises a plurality of sub-pixels; The plurality of sub-pixels comprises first color sub-pixels and second color sub-pixels, the transmittance of the first color sub-pixels is greater than that of the second color sub-pixels, and the area of the first color sub-pixels is greater than that of the second color sub-pixels; The plurality of sub-pixels further comprises first area sub-pixels and second area sub-pixels of the same color, the first area sub-pixels are located in the first area, the second area sub-pixels are located in the second area, and the color resistance layer thickness of the first area sub-pixels is less than or equal to that of the second area sub-pixels; The liquid crystal display panel comprises an array substrate and a counter substrate arranged oppositely, the array substrate comprises a first substrate, a first electrode layer, an insulating layer and a second electrode layer which are arranged in layers on a side of the first substrate close to the counter substrate; The first electrode layer comprises a touch electrode and a pixel electrode arranged separately, the second electrode layer comprises a common electrode, and the touch electrode and the common electrode are connected to the same voltage output end; The orthogonal projection of the second electrode layer on the first substrate does not overlap with the orthogonal projection of the touch electrode on the first substrate, and the orthogonal projection of the second electrode layer on the first substrate does not overlap with the orthogonal projection of the interval region between the touch electrode and the pixel electrode on the first substrate.

2. The liquid crystal display panel according to claim 1, wherein The light-emitting color of the first color sub-pixels is green, and the light-emitting color of the second color sub-pixels is red or blue.

3. The liquid crystal display panel according to claim 1, wherein The plurality of sub-pixels further comprises third color sub-pixels, the transmittance of the third color sub-pixels is greater than that of the second color sub-pixels and less than that of the first color sub-pixels, the area of the third color sub-pixels is greater than or equal to that of the second color sub-pixels and less than or equal to that of the first color sub-pixels.

4. The liquid crystal display panel according to claim 3, wherein The light-emitting color of the first color sub-pixels is green, the light-emitting color of the second color sub-pixels is blue, and the light-emitting color of the third color sub-pixels is red.

5. The liquid crystal display panel according to any one of claims 1 to 4, wherein The liquid crystal display panel comprises an array substrate and a counter substrate arranged oppositely, and a spacer is arranged between the array substrate and the counter substrate, the spacer has a first surface and a second surface arranged oppositely in the direction from the array substrate to the counter substrate; The edge of the first surface protrudes relative to the orthogonal projection of the edge of the second surface on the first surface, and the protruding amount is less than or equal to 3 μm.

6. The liquid crystal display panel according to claim 5, wherein The liquid crystal display panel further comprises a light shielding layer arranged on the array substrate and / or the counter substrate, the orthogonal projection of the edge of the light shielding layer on the plane where the first surface is located protrudes relative to the edge of the first surface, and the protruding amount is greater than or equal to 2 μm and less than or equal to 10 μm.

7. A display module, wherein, The display module comprises a backlight module and the liquid crystal display panel as claimed in any one of claims 1 to 6, the backlight module is arranged on the light exit side of the liquid crystal display panel, and the backlight module is used to provide backlight for the liquid crystal display panel. The backlight module has an opening area, a normal projection of the opening area on the display panel is located in the first area, and the opening area is used to place a shooting module, and the shooting module is used to shoot an image.

8. The display module of claim 7, wherein, The backlight module comprises a first light source, and the first light source is a light emitting diode using red and green phosphor.

9. The display module of claim 7, wherein, The backlight module comprises a light guide plate and at least one prism sheet, and the at least one prism sheet is located on the light exit side of the light guide plate. The prism sheet comprises a base film and a plurality of prism structures arranged on the side of the base film away from the light guide plate, the plurality of prism structures comprise at least one first prism structure and at least one second prism structure, the at least one second prism structure is located between the at least one first prism structure and the opening area, the first prism structure is used to make the light incident on the first prism structure exit to the second area, and the second prism structure is used to make at least part of the light incident on the second prism structure exit to the first area.

10. The display module of claim 9, wherein, Each of the prism structures has a slope close to the opening area, and an included angle between the slope and the base film is a slope angle. The slope angle of the second prism structure away from the opening area is greater than the slope angle of the second prism structure close to the opening area and less than the slope angle of the first prism structure.

11. The display module of claim 10, wherein, The slope angles of the first prism structures are the same.

12. The display module of claim 11, wherein, The slope angle of the first prism structure is 45°.

13. The display module of claim 9, wherein, The backlight module further comprises a second light source, and the second light source is located on the end face of the light guide plate close to the opening area.

14. The display module of claim 13, wherein, The second light source is a light emitting diode using red and green phosphor.

15. An electronic device, comprising: The electronic device comprises a shooting module and the display module as claimed in any one of claims 7 to 14, and the shooting module is located in the opening area of the backlight module.

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