Display panel of fringe field switching mode

Abstract

An edge field switching mode display panel includes a first light-transmissive substrate, a display area, a metal reflective layer, a transparent conductive layer and a second light-transmissive substrate. The display area has a plurality of pixel structures disposed on the first light-transmissive substrate. Each pixel structure includes a first scan line, a second scan line, a first data line, a second data line and a thin film transistor. The metal reflective layer is located in a pixel area of the pixel structure. A gap is formed between the metal reflective layer and the pixel area. The transparent conductive layer is disposed on the metal reflective layer. The transparent conductive layer is electrically connected to the first data line and the second data line, respectively, and seals the gap. The second light-transmissive substrate is disposed on the transparent conductive layer. By this design, the edge field switching mode display panel has a micro-penetration area.

Description

Technical Field

[0001] This utility model relates to a liquid crystal display panel, and more particularly to a display panel with an edge electric field switching mode having a micro-transmittance area. Background Technology

[0002] Mobile display panels with reflective and transmissive areas are commonly used in everyday life, such as in smartwatches, navigation devices, or POS systems.

[0003] In existing technologies, these mobile display panels are primarily used in environments with light, thus their optical structure and performance are mainly based on reflective optics, with transmittance optics as a secondary feature. Display panels designed with this structure are mostly used in ECB (Electrically Controlled Birefringence) or VA (Vertical Alignment) modes. While display panels with Fringe Field Switching (FFS) mode offer excellent display performance and are widely praised in the market, their application in applications that primarily use reflective optics with transmittance optics as a secondary feature is relatively rare. Utility Model Content

[0004] In view of this, the present invention provides a display panel with a Fringe Field Switching (FFS) mode having a micro-penetrating area.

[0005] One aspect of this invention is a display panel with an edge electric field switching mode, comprising: a first light-transmitting substrate having a first surface and an opposing second surface; a display area disposed on the first surface of the first light-transmitting substrate, the display area having multiple pixel structures, at least one of the multiple pixel structures including: a first scanning line and an opposing second scanning line; a first data line and an opposing second data line, wherein the first scanning line, the second scanning line, the first data line, and the second data line are connected to form a pixel area; a thin-film transistor located within the pixel area, a gate layer of the thin-film transistor electrically connected to the first scanning line, and a conductive layer of the thin-film transistor electrically connected to the first data line; a metal reflective layer located within the pixel area and electrically connected to the conductive layer of the thin-film transistor, with a gap between the metal reflective layer and the pixel area; a transparent conductive layer disposed on the metal reflective layer corresponding to the pixel structure, the transparent conductive layer being electrically connected to the first data line and the second data line respectively, and sealing the gap; and a second light-transmitting substrate disposed on the transparent conductive layer.

[0006] According to a feasible implementation scheme, in the first direction, there is a first gap between the metal reflective layer and the first data line; and a second gap between the metal reflective layer and the second data line.

[0007] According to a feasible implementation, the thin-film transistor is located in the corner of the pixel area.

[0008] According to a feasible implementation scheme, the metal reflective layer is close to the thin-film transistor.

[0009] According to a feasible implementation scheme, the transparent conductive layer has connecting portions on both sides, one connecting portion being electrically connected to the first data line and the other connecting portion being electrically connected to the second data line.

[0010] According to a feasible implementation, the transparent conductive layer has a plurality of slots spaced apart along a first direction, and each slot extends along a second direction orthogonal to the first direction.

[0011] According to a feasible implementation, the display panel with edge electric field switching mode further includes a display element located on a transparent conductive layer. The display element includes a liquid crystal layer, a light filter layer, and a second light-transmitting substrate, with the light filter layer located between the liquid crystal layer and the second light-transmitting substrate.

[0012] According to a feasible implementation, the display panel with edge electric field switching mode also includes a backlight module located outside the second surface of the first light-transmitting substrate.

[0013] According to a feasible implementation, the display panel with edge electric field switching mode also includes a black matrix located between the filter layer and the liquid crystal layer. The black matrix includes a body and a blocking part. The body covers the first scan line, the second scan line, the first data line and the second data line; the blocking part covers the thin film transistor.

[0014] According to a feasible implementation scheme, the width of the first gap of the display panel in the edge electric field switching mode is greater than or equal to 1 μm; the width of the second gap is greater than or equal to 1 μm.

[0015] According to a feasible implementation, a first side is defined adjacent to the side of the first data line, and a second side is defined adjacent to the side of the second data line. The distance between the metal reflective layer and the first side in a first direction is greater than or equal to 1 μm, corresponding to the body of the first data line. Similarly, the distance between the metal reflective layer and the second side in a first direction is greater than or equal to 1 μm, corresponding to the body of the second data line.

[0016] According to a feasible implementation scheme, the liquid crystal layer includes a first alignment film, a plurality of liquid crystals and a second alignment film, wherein the plurality of liquid crystals are located between the first alignment film and the second alignment film.

[0017] One of the advantages of this invention is that the edge electric field switching mode display panel provided by this invention has a gap between the metal reflective layer and the pixel area, through which light can pass through. In other words, the edge electric field switching mode display panel has a micro-light-transmitting area.

[0018] Furthermore, in the first direction, a first gap exists between the metal reflective layer and the first data line. A second gap exists between the metal reflective layer and the second data line. The transparent conductive layer respectively seals the first gap and the second gap without blocking light, allowing light to pass through the first gap and the second gap. In other words, the display panel with the edge electric field switching mode has a micro-transparent area, and the display elements on it can be further controlled through the electrical conduction of the transparent conductive layer.

[0019] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0020] Figure 1A This is a top view of the pixel structure and metal reflective layer according to an embodiment of the present invention.

[0021] Figure 1B This is a top view schematic diagram of the transparent conductive layer according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the display area of ​​a display panel in an edge electric field switching mode according to an embodiment of the present invention.

[0023] Figure 3 for Figure 2 A cross-sectional schematic diagram of the embodiment shown.

[0024] Figure 4 for Figure 2 A cross-sectional schematic diagram of the embodiment shown.

[0025] Figure 5 This is a cross-sectional schematic diagram of a display panel with an edge electric field switching mode according to an embodiment of the present invention.

[0026] Figure 6 This is a top view schematic diagram of the display panel of the edge electric field switching mode according to an embodiment of the present invention.

[0027] Figure 7 for Figure 5 A cross-sectional schematic diagram of the embodiment shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] Z1-Z3: Display panel with edge electric field switching mode; 1: First light-transmitting substrate; 11: First surface; 12: Second surface; 2: Pixel structure; 21: Thin film transistor; 211: Gate layer; 212: Conductive layer; 3: Metal reflective layer; 4: Transparent conductive layer; 41: Groove; 42: Connecting part; 5: Display element; 51: Liquid crystal layer; 511: First alignment film; 512: Liquid crystal; 513: Second alignment film; 52: Filter layer; 6: Backlight module; 8: Black matrix; 81: Body; 82: Obstruction part; 9: Second light-transmitting substrate; A: Pixel area; a1: First gap; a2: Second gap; b1: Distance; b2: Distance; GE1: First scan line; GE2: Second scan line; DL1: First data line; DL2: Second data line; DP: Display area; D1: First direction; D2: Second direction; E1: First side; E2: Second side. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of the "display panel with edge electric field switching mode" disclosed in this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0031] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein may, depending on the context, include any combination of one or more of the associated listed items.

[0032] Please see Figures 1A to 2 , Figure 1A This is a top view of the pixel structure and metal reflective layer of an embodiment of the present invention (the first and second light-transmitting substrates are omitted). Figure 1B This is a top view of a transparent conductive layer according to an embodiment of the present invention (the first and second light-transmitting substrates are omitted). Figure 2 This is a schematic diagram of the display area of ​​a display panel in an edge electric field switching mode according to an embodiment of the present invention. Figure 3 for Figure 2A cross-sectional schematic diagram of the embodiment shown. Figure 4 for Figure 2 A cross-sectional schematic diagram of the embodiment shown.

[0033] The edge electric field switching mode display panel Z1 includes: a first light-transmitting substrate 1, a display area DP, a metal reflective layer 3, a transparent conductive layer 4, and a second light-transmitting substrate 9. The first light-transmitting substrate 1 has a first surface 11 and an opposing second surface 12. The display area DP is disposed on the first surface 11 of the first light-transmitting substrate 1, and the display area DP has multiple pixel structures 2. At least one of the multiple pixel structures 2 includes a first scan line GE1, a second scan line GE2, a first data line DL1, a second data line DL2, and a thin-film transistor 21. The first scan line GE1 and the second scan line GE2 are opposite each other, and the first data line DL1 and the second data line DL2 are opposite each other. The first scan line GE1, the second scan line GE2, the first data line DL1, and the second data line DL2 are connected to form a pixel area A. The thin-film transistor 21 is located within the pixel area A (for example, at a corner of the pixel area A). The gate layer 211 of the thin-film transistor 21 is connected to the first scan line GE1, and the conductive layer 212 of the thin-film transistor 21 is connected to the first data line DL1. The metallic reflective layer 3 is located within pixel region A and is electrically connected to the conductive layer 212. Figure 1A , Figure 1B In the illustrated embodiment, the metal reflective layer 3 is close to the thin-film transistor 21. This close proximity can be either lateral or longitudinal. A gap exists between the metal reflective layer 3 and the pixel region A. A transparent conductive layer 4, corresponding to the pixel structure 2, is disposed on the metal reflective layer 3. The transparent conductive layer 4 is connected to the first data line DL1 and the second data line DL2, respectively, and closes the gap. A second light-transmitting substrate 9 is disposed on the transparent conductive layer 4. The gap can exist between any edge of the metal reflective layer 3 and the pixel region A. For example, the gap can be a slot, particularly an extendable and bendable slot. Figure 1A In the illustrated embodiment, the gap is a closed slot surrounding the metal reflective layer 3. The gap is completely sealed (shielded) by the transparent conductive layer 4. The gap can be used as a light-transmitting area.

[0034] To further explain, such as Figure 1A , Figure 1B and Figure 4As shown, the gaps include a first gap a1 and a second gap a2. In the first direction D1, there is a first gap a1 between the metal reflective layer 3 and the first data line DL1, and a second gap a2 between the metal reflective layer 3 and the second data line DL2. The transparent conductive layer 4 can respectively close the first gap a1 and the second gap a2. The first gap a1 and the second gap a2 can be used as low-light transmission areas, through which light can pass. According to some embodiments, the width of the first gap a1 of the display panel with edge electric field switching mode is greater than or equal to 1 μm; the width of the second gap a2 is greater than or equal to 1 μm.

[0035] The aforementioned electrical connection can refer to a physical direct contact connection or an indirect connection, such as forming a conductive path by connecting other conductive materials. This utility model is not limited in this regard.

[0036] The first light-transmitting substrate 1 and the second light-transmitting substrate 9 are, for example, glass. The metal reflective layer 3 is, for example, an aluminum or silver-based metal, which has high reflectivity. The transparent conductive layer 4 is, for example, indium tin oxide (ITO) or a zinc oxide compound. Figure 2 In the illustrated embodiment, the transparent conductive layer 4 has a plurality of slots 41 spaced apart along a first direction D1, and each slot 41 extends along a second direction D2 orthogonal to the first direction D1. A portion of the metal reflective layer 3 is exposed in each slot 41 (see...). Figure 2 ).like Figure 3 As shown, the thin-film transistor 21 includes a gate layer 211, a conductive layer 212 (source and drain), a semiconductor electrode layer 213, a first isolation layer 214, and a second isolation layer 215. According to... Figure 1B In the embodiment shown, the transparent conductive layer 4 has a connection portion 42 on each side. One connection portion 42 is electrically connected to the first data line DL1, and the other connection portion 42 is electrically connected to the second data line DL2.

[0037] Please see Figure 5 This is a cross-sectional schematic diagram of a display panel with an edge electric field switching mode according to an embodiment of the present invention. The display panel Z2 with the edge electric field switching mode also includes a display element 5 and a backlight module 6. The backlight module 6 is located outside the second surface 12 of the first light-transmitting substrate 1. The display element 5 is located between the transparent conductive layer 4 and the second light-transmitting substrate 9. The display element 5 includes a liquid crystal layer 51 and a light filter layer 52, with the light filter layer 52 located between the liquid crystal layer 51 and the second light-transmitting substrate 9. According to this embodiment, the liquid crystal layer 51 includes a first alignment film 511, a plurality of liquid crystals 512, and a second alignment film 513, with the plurality of liquid crystals 512 located between the first alignment film 511 and the second alignment film 513.

[0038] Please see Figure 6 and Figure 7 , Figure 6This is a top view of the display panel Z3 with edge electric field switching mode according to an embodiment of the present invention (the optical layer above the filter layer and the second light-transmitting substrate are omitted). Figure 7 for Figure 6 A cross-sectional schematic diagram of the illustrated embodiment. The display panel with edge electric field switching mode also includes a black matrix 8, which is located between the filter layer 52 and the liquid crystal layer 51. The black matrix 8 includes a body 81 and a blocking portion 82. The body 81 covers the first scan line GE1, the second scan line GE2, the first data line DL1, and the second data line DL2. The blocking portion 82 covers the thin-film transistor 21. With this configuration, the overall screen contrast can be significantly improved, crosstalk between different sub-pixels can be prevented, and the circuitry and metal lines of the thin-film transistor 21 can be shielded, thereby improving the appearance and visual quality.

[0039] exist Figure 7 In the illustrated embodiment, the metal reflective layer 3 is positioned adjacent to the side of the first data line DL1, defining a first side E1. The metal reflective layer 3 is positioned adjacent to the side of the second data line DL2, defining a second side E2. The distance b1 between the body 81 of the first data line and the first side E1 in the first direction D1 is greater than or equal to 1 μm. Similarly, the distance b2 between the body 81 of the second data line DL2 and the second side E2 in the first direction D1 is greater than or equal to 1 μm.

[0040] Beneficial effects of the embodiments

[0041] This invention provides a display panel with an edge electric field switching mode having a micro-penetrating area, wherein there is a gap between the metal reflective layer and the pixel area, and light can pass through the gap.

[0042] One of the beneficial effects is that, by having a first gap between the metal reflective layer and the first data line, and a second gap between the metal reflective layer and the second data line in the first direction; and by having the corresponding pixel structure of the transparent conductive layer disposed on the metal reflective layer, with the two sides of the transparent conductive layer connected to the first data line and the second data line respectively, and respectively sealing the first gap and the second gap, the display panel of the edge electric field switching mode has a micro-transmittance area, through which light can pass through the first gap and the second gap, and be emitted through the transparent conductive layer, and through the electrical conduction of the transparent conductive layer, the display elements on it can be further controlled.

[0043] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of protection of the claims of the present utility model. Therefore, all equivalent technical changes made based on the content of the present utility model specification and drawings are included in the scope of protection of the claims of the present utility model.

Claims

1. A display panel with an edge electric field switching mode, characterized in that, The display panel for the edge electric field switching mode includes: A first light-transmitting substrate has a first surface and an opposing second surface; A display area is disposed on the first surface of the first light-transmitting substrate, the display area having a plurality of pixel structures, at least one of the plurality of pixel structures including: A first scan line and a corresponding second scan line; A first data line and a corresponding second data line, wherein the first scan line, the second scan line, the first data line, and the second data line are connected to form a pixel region; and A thin-film transistor is located within the pixel region, a gate layer of the thin-film transistor is electrically connected to the first scan line, and a conductive layer of the thin-film transistor is electrically connected to the first data line; A metal reflective layer is located within the pixel region and is electrically connected to the conductive layer of the thin-film transistor, with a gap between the metal reflective layer and the pixel region; A transparent conductive layer is disposed on the metal reflective layer corresponding to the pixel structure. The transparent conductive layer is electrically connected to the first data line and the second data line respectively, and seals the gap. A second light-transmitting substrate is disposed on the transparent conductive layer. 2.The fringe field switching mode display panel of claim 1, wherein, In a first direction, the metal reflective layer has a first gap with the first data line; the metal reflective layer has a second gap with the second data line. 3.The fringe field switching mode display panel of claim 1, wherein, The thin-film transistor is located in a corner of the pixel area. 4.The display panel of the fringe field switching mode according to claim 1, wherein, The metal reflective layer is located close to the thin-film transistor. 5.The display panel of the fringe field switching mode according to claim 1, wherein, The transparent conductive layer has a connection portion on each side, one of the connection portions being electrically connected to the first data line and the other connection portion being electrically connected to the second data line. 6.The display panel of the fringe field switching mode according to claim 1, wherein, The transparent conductive layer has a plurality of slots arranged at intervals along a first direction, and each slot extends along a second direction orthogonal to the first direction. 7.The display panel of the fringe field switching mode according to claim 1, wherein, The display panel with the edge electric field switching mode further includes a display element located between the transparent conductive layer and the second light-transmitting substrate. The display element includes a liquid crystal layer and a filter layer, with the filter layer located between the liquid crystal layer and the second light-transmitting substrate. 8.The display panel of the fringe field switching mode according to claim 1, wherein, The display panel with the edge electric field switching mode also includes a backlight module located outside the second surface of the first light-transmitting substrate. 9.The fringe field switching mode display panel of claim 7, wherein, The display panel of the edge electric field switching mode also includes a black matrix located between the filter layer and the liquid crystal layer. The black matrix includes a body and a blocking part. The body covers the first scanning line, the second scanning line, the first data line and the second data line; the blocking part covers the thin film transistor. 10.The display panel of the fringe field switching mode according to claim 7, wherein, The liquid crystal layer includes a first alignment film, a plurality of liquid crystals and a second alignment film, wherein the plurality of liquid crystals are located between the first alignment film and the second alignment film.

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