Display panel

Abstract

A display panel is disclosed. The display panel includes a first substrate, a second substrate, a light emitting element, and a first light shielding layer. The light emitting element is disposed on a peripheral region of the second substrate and between the first substrate and the second substrate. A first surface and a second surface of the light emitting element face the first substrate and the second substrate, respectively. A sidewall of the light emitting element connects the first surface and the second surface. The first light shielding layer is disposed on the peripheral region of the second substrate and has a first opening. The light emitting element is disposed in the first opening of the first light shielding layer. The first light shielding layer covers the first surface and the sidewall of the light emitting element, and the second surface of the light emitting element is a light emitting surface of the light emitting element. In addition, another display panel is also proposed.

Description

Technical Field

[0001] This invention relates to a display panel. Background Technology

[0002] To meet users' needs for displaying various shared and comprehensive information over large areas, video wall displays integrating multiple display panels have been widely used in various fields. For example, video wall displays are commonly found in public information display fields (such as large advertisements and monitoring management screens). However, video wall displays often suffer from discontinuous overall display images, affecting viewing quality. Summary of the Invention

[0003] This invention provides a display panel with excellent optical performance.

[0004] A display panel according to an embodiment of the present invention includes a first substrate, a second substrate, a light-emitting element, and a first light-shielding layer. The second substrate is disposed opposite to the first substrate and has an active region and a peripheral region outside the active region. The light-emitting element is disposed on the peripheral region of the second substrate and located between the first substrate and the second substrate. The light-emitting element has a first surface, a second surface, and a sidewall, the first surface and the second surface facing the first substrate and the second substrate respectively, and the sidewall connecting the first surface and the second surface. The first light-shielding layer is disposed on the peripheral region of the second substrate and has a first opening. The light-emitting element is disposed in the first opening of the first light-shielding layer. The first light-shielding layer covers the first surface and sidewall of the light-emitting element, and the second surface of the light-emitting element is the light-emitting surface of the light-emitting element.

[0005] A display panel according to another embodiment of the present invention includes a first substrate, a second substrate, a gate driving circuit, a first light-shielding layer, and a light-emitting element. The first substrate has an active region and a peripheral region outside the active region. The second substrate is disposed opposite to the first substrate and has an active region and a peripheral region outside the active region. The active region and peripheral region of the first substrate overlap the active region and peripheral region of the second substrate, respectively. The gate driving circuit is disposed on the peripheral region of the first substrate. The first light-shielding layer is disposed on the peripheral region of the first substrate, located between the first substrate and the second substrate, and covers the gate driving circuit. The light-emitting element is disposed on the peripheral region of the first substrate, located between the first substrate and the second substrate, and outside the first light-shielding layer. Attached Figure Description

[0006] Figure 1 This is a cross-sectional schematic diagram of a display panel according to an embodiment of the present invention.

[0007] Figure 2 This is a cross-sectional and enlarged schematic diagram of the peripheral area of ​​a display panel according to an embodiment of the present invention.

[0008] Figure 3 This is a cross-sectional schematic diagram of a display panel according to another embodiment of the present invention.

[0009] Figure 4 This is a cross-sectional and enlarged schematic diagram of the peripheral area of ​​a display panel according to another embodiment of the present invention.

[0010] Figure 5 This is a cross-sectional schematic diagram of a display panel according to another embodiment of the present invention.

[0011] Figure 6 This is a cross-sectional and enlarged schematic diagram of the peripheral area of ​​the display panel according to another embodiment of the present invention.

[0012] Figure 7 This is a cross-sectional schematic diagram of a display panel according to another embodiment of the present invention.

[0013] Figure 8 This is a cross-sectional and enlarged schematic diagram of the peripheral area of ​​a display panel according to another embodiment of the present invention.

[0014] In the attached figures, the following labels are used:

[0015] 10, 10A, 10B, 10C: Display panels

[0016] 110: First substrate

[0017] 110a, 210a: Active region

[0018] 110b, 210b: Surrounding Area

[0019] 120: Gate drive circuit

[0020] 120-1, 230B-1: Part 1

[0021] 120-2, 230B-2: Part Two

[0022] 210: Second substrate

[0023] 220, 220B: Conductors

[0024] 230, 230A, 230B: First light-shielding layer

[0025] 232: First Opening

[0026] 240, 240B: Second light-shielding layer

[0027] 240s, 330: Sidewall

[0028] 242: Second opening

[0029] 244: Opening

[0030] 300: Light-emitting element

[0031] 310: First Surface

[0032] 320: Second Surface

[0033] 400: Frame adhesive

[0034] 500: Display medium

[0035] G, g: gap

[0036] L1: Beam

[0037] L2: Ambient light

[0038] R: Storage space Detailed Implementation

[0039] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element symbols are used in the drawings and description to denote the same or similar parts.

[0040] It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or an intermediate element may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate element is present. As used herein, "connection" can refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may involve the presence of other elements between the two elements.

[0041] As used herein, “about,” “approximately,” or “substantially” includes the value and the average value within an acceptable range of deviations from a particular value as determined by one of ordinary skill in the art, taking into account the measurement under discussion and a particular number of errors associated with the measurement (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations of the value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the use of “about,” “approximately,” or “substantially” herein may be chosen based on the optical, etched, or other properties to select a more acceptable range of deviations or standard deviations, and may not require a single standard deviation to apply to all properties.

[0042] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology and this invention, and will not be interpreted as having idealized or overly formal meanings unless expressly defined herein.

[0043] Figure 1This is a cross-sectional schematic diagram of a display panel according to an embodiment of the present invention. Figure 2 This is a cross-sectional and enlarged schematic diagram of the peripheral area of ​​a display panel according to an embodiment of the present invention. Figure 1 Omit Figure 2 The wire is 220, and Figure 2 Omit Figure 1 The frame adhesive 400 and the display medium 500.

[0044] Please refer to Figure 1 and Figure 2 The display panel 10 includes a first substrate 110, having an active region 110a and a peripheral region 110b outside the active region 110a. For example, in one embodiment, the first substrate 110 may be a pixel array substrate, wherein the pixel array substrate includes a first substrate (not shown), a plurality of pixel structures (not shown) disposed on the first substrate (not shown), a plurality of data lines and a plurality of gate lines, the plurality of pixel structures being disposed in the active region 110a, each pixel structure including a pixel transistor (not shown) and a pixel electrode (not shown), the plurality of first terminals of the plurality of pixel transistors of the plurality of pixel structures being electrically connected to the plurality of data lines, the plurality of control terminals of the plurality of pixel transistors of the plurality of pixel structures being electrically connected to the plurality of gate lines, and the plurality of second terminals of the plurality of pixel transistors of the plurality of pixel structures being electrically connected to the plurality of pixel electrodes of the plurality of pixel structures.

[0045] In one embodiment, the display panel 10 further includes a gate driving circuit 120 disposed in the peripheral region 110b of the first substrate 110. In one embodiment, the gate driving circuit 120 is electrically connected to the plurality of gate lines. In one embodiment, the gate driving circuit 120 may include elements electrically susceptible to illumination (e.g., but not limited to, thin-film transistors).

[0046] The display panel 10 further includes a second substrate 210 disposed opposite to the first substrate 110. The second substrate 210 has an active region 210a and a peripheral region 210b outside the active region 210a, which are respectively superimposed on the active region 110a and the peripheral region 110b of the first substrate 110. For example, in one embodiment, the second substrate 210 may be a color filter substrate, wherein the color filter substrate may include a black matrix (BM) (not shown) and a plurality of color filter patterns (not shown) disposed on the active region 210a. The black matrix has a plurality of pixel openings respectively superimposed on a plurality of pixel electrodes, and the plurality of color filter patterns are respectively disposed in the plurality of pixel openings of the black matrix.

[0047] The display panel 10 further includes a light-emitting element 300 disposed on a peripheral region 210b of the second substrate 210 and located between the first substrate 110 and the second substrate 210. The light-emitting element 300 has a first surface 310, a second surface 320, and a sidewall 330. The first surface 310 and the second surface 320 face the first substrate 110 and the second substrate 210, respectively, and the sidewall 330 connects the first surface 310 and the second surface 320. In one embodiment, the display panel 10 further includes a conductive line 220 disposed on the peripheral region 210b of the second substrate 210, and the light-emitting element 300 is disposed on and electrically connected to the conductive line 220. In one embodiment, the light-emitting element 300 is, for example, a micro light-emitting diode (μLED), and the conductive line 220 is, for example, a metal wire, but the invention is not limited thereto.

[0048] The display panel 10 further includes a first light-shielding layer 230 disposed on the peripheral region 210b of the second substrate 210. The first light-shielding layer 230 covers the first surface 310 and sidewall 330 of the light-emitting element 300. In a top view of the display panel 10, the first light-shielding layer 230 has a first opening 232, and the light-emitting element 300 is disposed in the first opening 232 of the first light-shielding layer 230. In one embodiment, the first light-shielding layer 230 and the light-emitting element 300 overlap the gate driving circuit 120, and the first light-shielding layer 230 is located between the light-emitting element 300 and the gate driving circuit 120.

[0049] The second surface 320 of the light-emitting element 300 is the light-emitting surface of the light-emitting element 300. That is, the light beam L1 emitted by the light-emitting element 300 is emitted from the second surface 320 of the light-emitting element 300, passes through the second substrate 210 and is transmitted to the external environment. Due to the obstruction of the first light-shielding layer 230, the light beam L1 emitted by the light-emitting element 300 is less likely to illuminate the gate driving circuit 120. Therefore, when multiple display panels 10 are spliced ​​together to form a splicing display device (not shown) with a large display screen, the light beam L1 emitted by the light-emitting element 300 on the peripheral area 210b of each display panel 10 can be emitted from the first opening 232 of the first light-shielding layer 230, thereby eliminating the splicing seam of the large display screen, and the light beam L1 emitted by the light-emitting element 300 is less likely to affect the electrical properties of the gate driving circuit 120. The splicing display device formed by splicing multiple display panels 10 can have both excellent optical and electrical performance.

[0050] In one embodiment, the display panel 10 further includes a frame adhesive 400 and a display medium 500. The frame adhesive 400 is disposed between the peripheral region 110b of the first substrate 110 and the peripheral region 210b of the second substrate 210, and together with the first substrate 110 and the second substrate 210, forms an accommodating space R. The display medium 500 is disposed within the accommodating space R. In one embodiment, the display medium 500 is, for example, a liquid crystal, but the present invention is not limited thereto. In one embodiment, the frame adhesive 400 is disposed on the peripheral region 210b of the second substrate 210, and the first light-shielding layer 230 is located between the light-emitting element 300 and the frame adhesive 400, and the frame adhesive 400 is located between the first light-shielding layer 230 and the first substrate 110.

[0051] In one embodiment, the display panel 10 further includes a second light-shielding layer 240 disposed on the peripheral region 210b of the second substrate 210 and having a second opening 242. A light-emitting element 300 is disposed in the second opening 242. The second light-shielding layer 240 has sidewalls 240s defining the second opening 242, and a first light-shielding layer 230 shields the gap g between the sidewalls 240s of the second light-shielding layer 240 and the light-emitting element 300. Because the first light-shielding layer 230 shields the gap g, ambient light L2 is less likely to pass through the gap g and illuminate the gate driving circuit 120. Therefore, the electrical properties of the gate driving circuit 120 are less susceptible to the influence of ambient light L2.

[0052] In one embodiment, the second light-shielding layer 240 may belong to the same film layer as the black matrix of the second substrate 210, while the first light-shielding layer 230 may belong to another film layer formed on the second light-shielding layer 240 and the light-emitting element 300, but the present invention is not limited thereto.

[0053] It must be noted that the following embodiments use the component reference numerals and some content from the foregoing embodiments, with the same reference numerals used to represent the same or similar components, and descriptions of the same technical content omitted. For explanations of the omitted parts, please refer to the foregoing embodiments; these will not be repeated in the following embodiments.

[0054] Figure 3 This is a cross-sectional schematic diagram of a display panel according to another embodiment of the present invention. Figure 4 This is a cross-sectional and enlarged schematic diagram of the peripheral area of ​​a display panel according to another embodiment of the present invention. Figure 3 Omit Figure 4 The wire is 220, and Figure 4 Omit Figure 3 The frame adhesive 400 and the display medium 500.

[0055] Figure 3 and Figure 4 Display panel 10A and Figure 1 and Figure 2 The display panel 10 is similar to the one in that the difference lies in: Figure 3 and Figure 4 In one embodiment, the first light-shielding layer 230A is formed only after the light-emitting element 300 is bonded to the wire 220 on the second substrate 210, to cover the light-emitting element 300 and the second substrate 210. Compared to Figure 1 and Figure 2 The display panel 10 uses a first light-shielding layer 230 and a second light-shielding layer 240 formed in stages to cover the light-emitting element 300 and the second substrate 210. Figure 3 and Figure 4 The display panel 10A uses a first light-shielding layer 230A formed in one step to cover the light-emitting element 300 and the second substrate 210, which can avoid the topographic bulge generated at the junction of the two light-shielding layers (i.e., the first light-shielding layer 230 and the second light-shielding layer 240) and increase the process margin.

[0056] Figure 5 This is a cross-sectional schematic diagram of a display panel according to another embodiment of the present invention. Figure 6 This is a cross-sectional and enlarged schematic diagram of the peripheral area of ​​the display panel according to another embodiment of the present invention. Figure 5 Omit Figure 6 The wire is 220B, and Figure 6 Omit Figure 5 The frame adhesive 400 and the display medium 500.

[0057] Figure 5 and Figure 6 Display panel 10B and Figure 1 and Figure 2 The display panel 10 is similar to that of the other two, but the main difference is that the positions of the light-emitting elements 300 and the first light-shielding layers 230 and 230B are different.

[0058] Please refer to Figure 5 and Figure 6 Specifically, in this embodiment, the first light-shielding layer 230B is disposed on the peripheral area 110b of the first substrate 110, located between the first substrate 110 and the second substrate 210, and covers the gate driving circuit 120; the light-emitting element 300 is disposed on the peripheral area 110b of the first substrate 110, located between the first substrate 110 and the second substrate 210, and located outside the first light-shielding layer 230B.

[0059] In this embodiment, the gate driving circuit 120 includes a first portion 120-1 and a second portion 120-2, and the first light-shielding layer 230B includes a first portion 230B-1 and a second portion 230B-2. The first portion 230B-1 and the second portion 230B-2 of the first light-shielding layer 230B respectively cover the first portion 120-1 and the second portion 120-2 of the gate driving circuit 120, and the light-emitting element 300 is disposed in the gap G between the first portion 230B-1 and the second portion 230B-2 of the first light-shielding layer 230B.

[0060] In this embodiment, the second light-shielding layer 240B is disposed in the peripheral region 210b of the second substrate 210 and located between the first substrate 110 and the second substrate 210. The second light-shielding layer 240B has a plurality of openings 244, at least one of which overlaps with the light-emitting element 300. In this embodiment, at least one of the plurality of openings 244 of the second light-shielding layer 240B overlaps with the first light-shielding layer 230B covering the gate driving circuit 120. In this embodiment, the second light-shielding layer 240B may be in the form of a gate, and the plurality of openings 244 of the second light-shielding layer 240B may be a plurality of slits, but the present invention is not limited thereto.

[0061] In this embodiment, the light-emitting element 300 is disposed on the first substrate 110. The opening 244 of the second light-shielding layer 240B on the second substrate 210 allows the light beam L1 emitted by the light-emitting element 300 to pass through without excessively affecting the display. Ambient light L2 can pass through the opening 244 of the second light-shielding layer 240B and be transmitted to the gate driving circuit 120 disposed on the first substrate 110. The first light-shielding layer 230B covering the gate driving circuit 120 can block the ambient light L2 from illuminating the gate driving circuit 120. In short, under this architecture, the light beam L1 emitted by the light-emitting element 300 can pass through smoothly, while at the same time, the gate driving circuit 120 will not be excessively irradiated by the ambient light L2, thus affecting its electrical properties.

[0062] Figure 7 This is a cross-sectional schematic diagram of a display panel according to another embodiment of the present invention. Figure 8 This is a cross-sectional and enlarged schematic diagram of the peripheral area of ​​a display panel according to another embodiment of the present invention. Figure 7 Omit Figure 8 The wire is 220B, and Figure 8 Omit Figure 7 The frame adhesive 400 and the display medium 500.

[0063] Figure 7 and Figure 8 The display panel 10C and Figure 5 and Figure 6 The display panel is similar to the 10B, but the differences are: Figure 7 and Figure 8 The display panel 10C may not include Figure 5 and Figure 6 The second light-shielding layer 240B of the display panel 10B.

[0064] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A display panel, characterized in that, include: First substrate; A second substrate is disposed opposite to the first substrate and has an active region and a peripheral region outside the active region; A light-emitting element is disposed on the peripheral area of ​​the second substrate and located between the first substrate and the second substrate. The light-emitting element has a first surface, a second surface and a sidewall. The first surface and the second surface face the first substrate and the second substrate respectively, and the sidewall connects the first surface and the second surface. A first light-shielding layer is disposed on the peripheral area of ​​the second substrate and has a first opening, wherein the light-emitting element is disposed in the first opening of the first light-shielding layer, the first light-shielding layer covers the first surface and the sidewall of the light-emitting element, and the second surface of the light-emitting element is a light-emitting surface of the light-emitting element. as well as A gate driving circuit, wherein the first substrate has an active region and a peripheral region outside the active region, the active region and the peripheral region of the first substrate overlap the active region and the peripheral region of the second substrate respectively, the gate driving circuit is disposed in the peripheral region of the first substrate, the first light-shielding layer and the light-emitting element overlap the gate driving circuit, and the first light-shielding layer is located between the light-emitting element and the gate driving circuit.

2. The display panel as described in claim 1, characterized in that, Including: A frame adhesive is disposed on the peripheral area of ​​the second substrate, wherein the first light-shielding layer is located between the light-emitting element and the frame adhesive, and the frame adhesive is located between the first light-shielding layer and the first substrate.

3. The display panel as described in claim 1, characterized in that, Including: A second light-shielding layer is disposed on the peripheral area of ​​the second substrate and has a second opening, wherein the light-emitting element is disposed in the second opening. The second light-shielding layer has a sidewall defining the second opening, and the first light-shielding layer shields the gap between the sidewall of the second light-shielding layer and the light-emitting element.

4. A display panel, characterized in that, include: A first substrate has an active region and a peripheral region outside the active region; A second substrate is disposed opposite to the first substrate and has an active region and a peripheral region outside the active region, wherein the active region and the peripheral region of the first substrate overlap the active region and the peripheral region of the second substrate, respectively. A gate driving circuit is disposed on the peripheral region of the first substrate; A first light-shielding layer is disposed on the peripheral area of ​​the first substrate, located between the first substrate and the second substrate, and covers the gate driving circuit; and A light-emitting element is disposed on the peripheral area of ​​the first substrate, located between the first substrate and the second substrate, and outside the first light-shielding layer.

5. The display panel as described in claim 4, characterized in that, The gate driving circuit includes a first part and a second part, the first light-shielding layer includes a first part and a second part, the first part and the second part of the first light-shielding layer respectively cover the first part and the second part of the gate driving circuit, and the light-emitting element is disposed in a gap between the first part and the second part of the first light-shielding layer.

6. The display panel as described in claim 4, characterized in that, Including: A second light-shielding layer is disposed in the peripheral area of ​​the second substrate and located between the first substrate and the second substrate, wherein the second light-shielding layer has at least one opening overlapping the light-emitting element.

7. The display panel as described in claim 6, characterized in that, The at least one opening of the second light-shielding layer overlaps with the first light-shielding layer.

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