Display panel

Abstract

The invention discloses a display panel which comprises a substrate, a thin film transistor, a color resistance protection layer and a conductive layer. The thin film transistor is disposed on the substrate. The color resistance protection layer is arranged on the thin film transistor and the substrate, the color resistance protection layer is overlapped on the thin film transistor in the normal direction of the substrate, and the color resistance protection layer comprises a first opening. The color resistance protection layer is used for absorbing at least one part of light of the visible light wave band. The conductive layer is arranged on the color resistance protection layer, and the conductive layer is electrically connected with the thin film transistor through the first opening.

Description

TECHNICAL FIELD

[0001] The present application relates to a display panel, and in particular, to a display panel including a color resist protection layer. BACKGROUND

[0002] Display panels have been widely applied in various electronic products, such as notebook computers, smart phones, wearable devices, smart watches, and vehicle display screens, to provide more convenient information transmission and display. However, the reflected light generated by the light (such as ambient light and / or light provided by a light-emitting module) irradiating the film layers and elements in the display panel affects the color contrast, and the light irradiating the electronic elements also causes light leakage problems. Therefore, the film layer architecture design of the display panel is still one of the important issues today. SUMMARY

[0003] The purpose of the present application is to provide a display panel, wherein the color resist protection layer can absorb light and overlap the thin film transistor, avoiding stray light reflection or penetration, thereby reducing light leakage and improving color contrast, and the color resist protection layer can also function as a planarization layer.

[0004] To achieve the above purpose, the present application provides a display panel, including a substrate, a thin film transistor, a color resist protection layer, and a conductive layer. The thin film transistor is disposed on the substrate. The color resist protection layer is disposed on the thin film transistor and the substrate, the color resist protection layer overlaps the thin film transistor in the normal direction of the substrate, and the color resist protection layer includes a first opening. The color resist protection layer is used to absorb at least part of the light in the visible light band. The conductive layer is disposed on the color resist protection layer, and the conductive layer is electrically connected to the thin film transistor through the first opening.

[0005] According to the display panel of the present application, the color resist protection layer which can absorb light is disposed on the thin film transistor and the substrate, which can avoid stray light reflection, scattering or penetration in the stacked structure of the display panel, thereby improving the color contrast. Moreover, the color resist protection layer can function as a planarization layer to fill the topography, and the color resist protection layer overlapping the thin film transistor can also function as a light shielding layer to reduce the light leakage problem. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is a partial cross-sectional schematic view of the display panel of the first embodiment of the present application.

[0007] Figure 2 It is a partial cross-sectional schematic view of the display panel of the second embodiment of the present application.

[0008] Figure 3 It is a partial cross-sectional schematic view of the display panel of the third embodiment of the present application.

[0009] Figure 4 A partial cross-sectional view of a display panel according to a fourth embodiment of the present application.

[0010] Figure 5 A partial cross-sectional view of a display panel according to a fifth embodiment of the present application.

[0011] Figure 6 A partial cross-sectional view of a display panel according to a sixth embodiment of the present application.

[0012] Figure 7 A partial cross-sectional view of a display panel according to a seventh embodiment of the present application.

[0013] Figure 8 A partial cross-sectional view of a display panel according to an eighth embodiment of the present application.

[0014] Figure 9 A partial cross-sectional view of a display panel according to a ninth embodiment of the present application.

[0015] BRIEF DESCRIPTION OF DRAWINGS 100 - substrate; 100a, 120a, 150a - upper surface; 110 - thin film transistor; 120 - color resist protective layer; 130, M1, M2, 160 - conductive layer; 140 - transparent conductive layer; 150 - transparent protective layer; BL - backlight module; DE - drain electrode; DP - display panel; GE - gate electrode; GI, I1, I2 - insulating layer; L - light; LB - backlight; LR - reflected light; LT - transmitted light; OP1 - first opening; OP2 - second opening; OP3 - third opening; OP4 - fourth opening; OP5 - fifth opening; OR - opening region; SC - semiconductor layer; SE - source electrode; V1, V2 - hole; Z - direction. DETAILED DESCRIPTION

[0016] In order to enable persons skilled in the art to further understand the present application, the preferred embodiments of the present application are described below in detail, and the configuration content and the effects to be achieved of the present application are described in detail with reference to the accompanying drawings. It should be noted that the accompanying drawings are simplified schematic diagrams, and thus only show the elements and combination relationships related to the present application to provide a clearer description of the basic architecture or implementation method of the present application, and the actual elements and layout can be more complex. In addition, in order to facilitate the description, the elements shown in the drawings of the present application are not drawn in proportion to the actual number, shape, size, etc., and the detailed proportions can be adjusted according to the design requirements.

[0017] In the present specification and claims, the words "comprise", "contain", "have" and the like are to be construed as open-ended words, i.e., the meaning of "comprising", "containing", "having" and the like is not limited to an " consisting of meaning. Thus, when the specification and claims state that a composition "comprises", "contains", or "has" certain features, it is intended that it can also comprise, contain or have additional features. In other words, the description and claims are not limited to the features recited in the description or claims.

[0018] The use of ordinal numbers such as "first", "second" and the like in the present specification and claims is used to distinguish elements, and does not mean to imply any precedence or order of manufacture or sequence of use. The use of ordinal numbers is used to clearly distinguish one element from another element with the same name. The same words can be used in the claims and the specification, whereby a first element in the specification can be a second element in the claims.

[0019] In the present application, the display panel can be applied in a non-self-luminous display device or a self-luminous display device. The display panel can be, for example, a reflective type display panel (such as shown in FIG. 1), a transflective type display panel (such as shown in FIG. 2), a transmissive type display panel, or other suitable display panel. The display panel can include, for example, a liquid crystal display panel or other suitable display panel. For example, the display panel can include oppositely arranged thin-film transistor substrates and color filter substrates, and a display medium layer between the thin-film transistor substrates and the color filter substrates, but the structure of the display panel is not limited thereto. The display medium layer includes, for example, liquid crystals or light-emitting diodes. The light-emitting diodes can include, for example, organic light-emitting diodes (OLEDs), mini / micro light-emitting diodes (mini / micro LEDs), but are not limited thereto. Figures 1 to 4 Figures 5 to 9 In the present application, the display panel can be applied in a non-self-luminous display device or a self-luminous display device. The display panel can be, for example, a reflective type display panel (such as shown in FIG. 1), a transflective type display panel (such as shown in FIG. 2), a transmissive type display panel, or other suitable display panel. The display panel can include, for example, a liquid crystal display panel or other suitable display panel. For example, the display panel can include oppositely arranged thin-film transistor substrates and color filter substrates, and a display medium layer between the thin-film transistor substrates and the color filter substrates, but the structure of the display panel is not limited thereto. The display medium layer includes, for example, liquid crystals or light-emitting diodes. The light-emitting diodes can include, for example, organic light-emitting diodes (OLEDs), mini / micro light-emitting diodes (mini / micro LEDs), but are not limited thereto.

[0020] ​The reflective display panel can use ambient light as the light source for displaying images. The ambient light enters the display panel from the side of the display panel facing the user, and the display panel reflects the ambient light to display corresponding images. The ambient light can be, but is not limited to, sunlight. In some embodiments, the display panel can further include a front light module. The ambient light can also include light provided by the front light module, wherein the front light module is disposed on the side of the display panel facing the user. The semi-transmissive and semi-reflective display panel can further include a backlight module. In addition to using the ambient light as the light source for displaying images, the semi-transmissive and semi-reflective display panel can also use light provided by the backlight module as another light source for displaying images, wherein the backlight module is disposed on the side of the display panel facing away from the user.

[0021] It should be noted that the following embodiments can be replaced, reorganized, mixed, and other embodiments can be completed by replacing, reorganizing, and mixing the features of different embodiments without departing from the spirit of the present application. The features of different embodiments can be mixed and used as long as they do not conflict with each other and do not deviate from the spirit of the present application.

[0022] Please refer to Figure 1 , which is a partial cross-sectional view of a display panel according to a first embodiment of the present application. As shown in Figure 1 , the display panel DP includes a substrate 100, a thin film transistor 110, a color resistance protection layer 120, and a conductive layer 130. The substrate 100 can include a hard substrate or a flexible substrate. The hard substrate can include, for example, but is not limited to, glass, ceramic, quartz, or sapphire. The flexible substrate can include, for example, but is not limited to, polyimide (PI), polycarbonate (PC), polyethyleneterephthalate (PET), or poly(methyl methacrylate) (PMMA). The thin film transistor 110 is disposed on the substrate 100. The thin film transistor 110 can be, for example, but is not limited to, a driving element or a switching element of a pixel. The thin film transistor 110 can include a drain electrode DE, a source electrode SE, a gate electrode GE, and a semiconductor layer SC. The gate electrode GE and the semiconductor layer SC have an insulating layer GI therebetween, which can be a gate insulating layer in the thin film transistor 110. It should be noted that Figure 1 The layers of the thin film transistor 110 shown are only one example, and the present application is not limited thereto.

[0023] The color resist protection layer 120 is disposed on the thin film transistor 110 and the substrate 100, and overlaps the thin film transistor 110 in a direction Z, wherein the direction Z is a normal direction of the substrate 100, that is, the direction Z can be parallel to the normal direction of the upper surface 100a or the lower surface of the substrate 100. The color resist protection layer 120 has a flat upper surface 120a on a side opposite to the substrate 100, the color resist protection layer 120 covers the thin film transistor 110 and the substrate 100, and the color resist protection layer 120 can serve as a planarization layer to fill the topography, that is, the color resist protection layer 120 covers the elements or conductive lines under the color resist protection layer 120 to provide a flat upper surface. The color resist protection layer 120 includes a first opening OP1, the conductive layer 130 is disposed on the color resist protection layer 120, and the conductive layer 130 is electrically connected to the thin film transistor 110 through the first opening OP1. As shown in Figure 1 FIG. 6, a portion of the conductive layer 130 can be located in the first opening OP1 and electrically connected to the drain DE of the thin film transistor 110 through the first opening OP1. On the other hand, the display panel DP can include a liquid crystal layer (not shown) disposed on the conductive layer 130, and thus the color resist protection layer 120 having a flat surface can make the liquid crystal layer gap have a smaller degree of variation to improve the quality of the display image.

[0024] In the present disclosure, the color resist protection layer 120 is used to absorb at least a portion of the light L in the visible light band, so as to avoid unnecessary light or stray light from penetrating or reflecting or scattering in the stacked structure of the display panel DP, wherein the light L can be ambient light (such as sunlight) and / or light provided by the front light module. The color resist protection layer 120 can include one of black color resist, blue color resist, green color resist and red color resist. In some embodiments, when the color resist protection layer 120 includes black color resist, it can be used to absorb all light L in the visible light band, so as to avoid the reflection or penetration of stray light, which can cause a poor visual experience of reduced contrast, so as to improve the color contrast. In addition, the color resist protection layer 120 can also have the function of a light shielding layer, which blocks the light from penetrating and irradiating the thin film transistor 110 below, so as to reduce the probability of light leakage problem. In addition, generally, the display panel DP is provided with a black matrix layer (BM) on the side of the other substrate (such as a color filter substrate) opposite to the substrate 100, and the color resist protection layer 120 provided in the present disclosure can be used to replace the function of the black matrix layer, and can also reduce the reduction of the opening rate and / or reflectivity caused by the alignment accuracy error of the black matrix layer in the prior art. In other embodiments, when the color resist protection layer 120 includes color resist that absorbs other specific wavelength band light, that is, when the color resist protection layer 120 is used to absorb a portion of the light L in the visible light band, the function of adjusting the color gamut of the panel can be achieved. For example, when the color resist protection layer 120 includes blue color resist, the yellowing effect of the visual effect can be improved; when the color resist protection layer 120 includes green color resist, the contrast effect of the visual effect can be improved; and when the color resist protection layer 120 includes red color resist, the visual fatigue effect can be improved.

[0025] According to Figure 1In the illustrated embodiment, the display panel DP can be a reflective display panel, in which the conductive layer 130 can be a metal layer and used to reflect the light L to form reflected light LR for displaying images. The color-resistance protective layer 120 can serve as a planarization layer to maintain the planarity of the conductive layer 130, so as to obtain stable reflected light LR. In addition, the display panel DP can further include a transparent conductive layer 140 disposed between the conductive layer 130 and the color-resistance protective layer 120, and the transparent conductive layer 140 can be electrically connected to the thin film transistor 110 through the first opening OP1 of the color-resistance protective layer 120. The transparent conductive layer 140 can serve as a pixel electrode, and the transparent conductive layer 140 has an opening region OR such that electrodes of adjacent pixels can be separated from each other. In regions other than the opening region OR, the conductive layer 130 can be disposed on the transparent conductive layer 140. Light L entering the opening region OR can be absorbed by the color-resistance protective layer 120 to avoid stray light penetrating through the stacked structure of the display panel DP or being reflected or scattered therein. However, the architecture of the pixel electrode in the present application is not limited to the above, and in some embodiments, the conductive layer 130 can simultaneously serve as a metal reflective layer and a pixel electrode and have an opening region, without additionally disposing the transparent conductive layer 140. In other embodiments, the conductive layer 130 can be a transparent conductive layer and serve as a pixel electrode, so that the display panel DP thus formed can be a transmissive display panel, in which the transparent conductive layer 140 can also not be additionally disposed.

[0026] As shown in Figure 1 , the display panel DP can for example include, sequentially disposed on the upper surface 100a of the substrate 100 along the direction Z, a conductive layer M1 constituting a gate electrode GE, an insulating layer GI constituting a gate insulating layer, a semiconductor layer SC, a conductive layer M2 constituting a drain electrode DE and a source electrode SE, an insulating layer I1, the color-resistance protective layer 120, an insulating layer I2, a transparent conductive layer 140, and a conductive layer 130. The insulating layer I1 can have a hole V1 exposing a portion of the drain electrode DE, and the first opening OP1 of the color-resistance protective layer 120 partially overlaps the hole V1 in the direction Z. A portion of the insulating layer I2 is disposed within the first opening OP1 to cover the sidewall of the first opening OP1, and the insulating layer I2 has a hole V2 overlapping the hole V1 in the direction Z. The transparent conductive layer 140 and the conductive layer 130 can be in contact with and electrically connected to the drain electrode DE of the thin film transistor 110 through the hole V2 and the hole V1 within the first opening OP1.

[0027] The display panel of the present application is not limited to the above-described embodiments. Further embodiments of the display panel of the present application will be described in detail below. For the sake of simplicity, the same reference numerals are used to denote the same elements in the present application, and the differences between different embodiments will be mainly described below, and the same features will not be described again.

[0028] Please refer to Figure 2 , which is a partial cross-sectional schematic view of a display panel of a second embodiment of the present application.Figure 2 The display panel DP of the second embodiment shown is Figure 1 The difference in the first embodiment shown is that the display panel DP may further include a transparent protective layer 150 disposed on the substrate 100, and the transparent protective layer 150 may at least partially overlap the color resist protective layer 120 in the Z direction, wherein the transparent protective layer 150 is disposed between the color resist protective layer 120 and the conductive layer 130. Specifically, as Figure 2 As shown, a color resist protective layer 120 can be disposed on an insulating layer I1, and a transparent protective layer 150 can be disposed on and completely cover the color resist protective layer 120. The insulating layer I2, transparent conductive layer 140, and conductive layer 130 can be sequentially disposed on the transparent protective layer 150 along direction Z. The transparent protective layer 150 may include a second opening OP2, and the second opening OP2 of the transparent protective layer 150 overlaps with the first opening OP1 of the color resist protective layer 120 in direction Z. The conductive layer 130 can be electrically connected to the thin-film transistor 110 through the second opening OP2 of the transparent protective layer 150 and the first opening OP1 of the color resist protective layer 120. Figure 2 As shown, the transparent conductive layer 140 can contact and electrically connect to the drain DE of the thin film transistor 110 through the hole V2 within the second opening OP and the first opening OP1, and the conductive layer 130 can be connected to the transparent conductive layer 140.

[0029] according to Figure 2 In the illustrated embodiment, light L entering the opening region OR can penetrate the transparent protective layer 150 and be absorbed by the color resist protective layer 120 to prevent stray light from penetrating the stacked structure or being reflected or scattered therein. The color resist protective layer 120 has a flat upper surface 120a on the side opposite to the substrate 100, and the transparent protective layer 150 also has a flat upper surface 150a on the side opposite to the color resist protective layer 120, so that both the transparent protective layer 150 and the color resist protective layer 120 can serve as planarization layers. Compared to a single planarization layer, in this embodiment, the transparent protective layer 150 and the color resist protective layer 120 serve as two planarization layers, resulting in better flatness of the stacked structure. For example, Figure 2 The conductive layer 130 disposed on the top layer can have better flatness to obtain more stable reflected light LR, or the liquid crystal layer (not shown) disposed on the conductive layer 130 can have a smaller degree of variation in the liquid crystal layer gap, thereby improving the display quality.

[0030] Please refer to Figure 3 This is a partial cross-sectional schematic diagram of the display panel according to the third embodiment of the present invention. Figure 3 The third embodiment shown has a display panel DP and Figure 2 The difference in the second embodiment shown is that the transparent protective layer 150 is disposed between the color resist protective layer 120 and the substrate 100. Specifically, as Figure 3As shown, the transparent protective layer 150 can be disposed on the insulating layer I1, the color resist protective layer 120 can be disposed on the transparent protective layer 150 and cover the transparent protective layer 150 entirely, and the insulating layer I2, the transparent conductive layer 140 and the conductive layer 130 can be sequentially disposed on the color resist protective layer 120 along the direction Z. The transparent protective layer 150 can include a second opening OP2, and the second opening OP2 of the transparent protective layer 150 overlaps the first opening OP1 of the color resist protective layer 120 along the direction Z. The conductive layer 130 can be electrically connected to the thin film transistor 110 through the first opening OP1 of the color resist protective layer 120 and the second opening OP2 of the transparent protective layer 150. As shown, Figure 3 As shown, the transparent conductive layer 140 can be in contact with the hole V1 of the thin film transistor 110 through the hole V2 within the first opening OP1 and the second opening OP2, and the conductive layer 130 can be connected to the transparent conductive layer 140.

[0031] According to the embodiment shown, Figure 3 As shown, the light ray L entering the opening region OR can be absorbed by the color resist protective layer 120 to avoid the stray light penetrating the laminated structure of the display panel DP or being reflected or scattered therein. Similarly, compared with a flat layer, the transparent protective layer 150 and the color resist protective layer 120 as two flat layers in the embodiment can make the laminated structure have better flatness.

[0032] Please refer to Figure 4 which is a partial cross-sectional schematic view of a display panel according to a fourth embodiment of the present application. According to the embodiment shown, Figure 4 As shown, the display panel DP can further include a conductive layer 160 disposed between the transparent protective layer 150 and the color resist protective layer 120. Moreover, the second opening OP2 of the transparent protective layer 150 does not overlap the first opening OP1 of the color resist protective layer 120 along the direction Z, and the conductive layer 130 and the transparent conductive layer 140 can be electrically connected to the conductive layer 160 through the second opening OP2 and electrically connected to the thin film transistor 110 through the conductive layer 160. That is, the conductive layer 160 can serve as a bridging layer of the first opening OP1 and the second opening OP2. In the embodiment, the second opening OP2 and the first opening OP1 are located at different positions and do not overlap each other, so that when the second opening OP2 is formed in the exposure and development process, the thickness of the photoresist will not be too thick to cause poor exposure and development. Specifically, as shown, Figure 4As shown, the insulating layer I1 can have a hole V1 exposing a portion of the drain DE, and the first opening OP1 of the color resist protective layer 120 partially overlaps the hole V1 in the direction Z. The conductive layer 160 can contact and electrically connect the drain DE of the thin film transistor 110 through the first opening OP1 and the hole V1, and a portion of the conductive layer 160 is disposed on the upper surface 120a of the color resist protective layer 120. The transparent protective layer 150 is disposed on the conductive layer 160 and the color resist protective layer 120 and fills the first opening OP1 of the color resist protective layer 120, wherein the second opening OP2 of the transparent protective layer 150 does not overlap the first opening OP1 and exposes a portion of the conductive layer 160 disposed on the upper surface 120a of the color resist protective layer 120. A portion of the insulating layer I2 can be disposed within the second opening OP2 to cover the sidewall thereof, and the insulating layer I2 has a hole V2 overlapping the second opening OP2 in the direction Z. The transparent conductive layer 140 can contact and electrically connect the conductive layer 160 through the hole V2 within the second opening OP2, and the conductive layer 130 can be connected to the transparent conductive layer 140.

[0033] In some embodiments, the conductive layer 160 disposed between the transparent protective layer 150 and the color resist protective layer 120 can be a transparent conductive layer, but the present application is not limited thereto, and in other embodiments the conductive layer 160 can be a non-transparent metal layer. Figure 4 As shown, the transparent protective layer 150 and the color resist protective layer 120 are interchanged in position, that is, the transparent protective layer 150 can be disposed on the lower layer and the color resist protective layer 120 can be disposed on the upper layer. In some embodiments, the conductive layer 160 disposed between the transparent protective layer 150 and the color resist protective layer 120 can be a transparent conductive layer, but the present application is not limited thereto, and in other embodiments the conductive layer 160 can be a non-transparent metal layer.

[0034] Please refer to Figure 5 , which is a partial cross-sectional schematic view of a display panel according to a fifth embodiment of the present application. As shown in Figure 5 , the display panel DP can further include a backlight module BL disposed on the side of the substrate 100 opposite the thin film transistor 110. Moreover, the color resist protective layer 120 can further include a third opening OP3, wherein the backlight LB emitted by the backlight module BL can pass through the third opening OP3. According to Figure 5 , the display panel DP can be a semi-transmission semi-reflection type display panel. The conductive layer 130 can be a metal layer and include a fourth opening OP4 overlapping the third opening OP3 in the direction Z, and the display panel DP can further include a transparent conductive layer 140 disposed between the conductive layer 130 and the color resist protective layer 120, wherein a portion of the transparent conductive layer 140 is disposed corresponding to the third opening OP3 of the color resist protective layer 120.

[0035] In particular, the conductive layer 130 is a metal layer and is configured to reflect the light rays L to form reflected light LR to display an image, wherein the light rays L can be ambient light and / or light rays provided by the front light module, and the color resist protection layer 120 can serve as a planarization layer and absorb the light rays L entering the opening region OR. Details of the opening region OR can refer to the foregoing Figure 1 As shown in the first embodiment, details thereof will not be repeated here. On the other hand, when the backlight module BL is turned on, the backlight LB emitted by the backlight module BL can pass through the third opening OP3 and the fourth opening OP4 to display an image, and in the area outside the third opening OP3, the backlight LB can be absorbed by the color resist protection layer 120 to avoid stray light penetrating the stacked structure of the display panel DP or multiple reflections or scattering therein to generate heat energy. Moreover, the color resist protection layer 120 absorbs the light rays L to avoid stray light irradiating the thin film transistor 110 to cause light leakage problems, thereby improving the stability of the thin film transistor 110.

[0036] As shown in Figure 5 The insulating layer I1 can be disposed on the substrate 100, and the third opening OP3 of the color resist protection layer 120 can expose a portion of the insulating layer I1. A portion of the insulating layer I2 can be disposed in the third opening OP3 to cover the sidewall thereof, and a portion of the transparent conductive layer 140 can be disposed in the third opening OP3 and disposed on the insulating layer I2. The area overlapping the third opening OP3 and the fourth opening OP4 can serve as a penetration region, so that the backlight LB emitted by the backlight module BL can pass through the penetration region (for example, but not limited to, sequentially pass through the substrate 100, the insulating layer GI, the insulating layer I1, the insulating layer I2, and the transparent conductive layer 140) to form penetration light LT to display an image.

[0037] Please refer to Figure 6 which is a partial cross-sectional schematic view of a display panel of a sixth embodiment of the present application. Figure 6 The display panel DP of the sixth embodiment is different from Figure 5 The display panel DP further includes a transparent protection layer 150 disposed on the substrate 100, and the transparent protection layer 150 at least partially overlaps the color resist protection layer 120 in the direction Z. As shown in Figure 6As shown, the transparent protective layer 150 is disposed between the color resist protective layer 120 and the conductive layer 130. For example, the color resist protective layer 120 can be disposed on the insulating layer I1, and the transparent protective layer 150 is disposed on the color resist protective layer 120 and covers the color resist protective layer 120 entirely. The transparent protective layer 150 includes a fifth opening OP5, which overlaps the third opening OP3 in the direction Z, and the backlight LB emitted by the backlight module BL can sequentially pass through the third opening OP3, the fifth opening OP5, and the fourth opening OP4. That is, the areas corresponding to the third opening OP3 of the color resist protective layer 120, the fifth opening OP5 of the transparent protective layer 150, and the fourth opening OP4 of the conductive layer 130 can form a penetration area, so that the backlight LB emitted by the backlight module BL can pass through the penetration area (for example, but not limited to, sequentially pass through the substrate 100, the insulating layer GI, the insulating layer I1, the insulating layer I2, and the transparent conductive layer 140) to form a penetrating light LT to display a picture. In this embodiment, the transparent protective layer 150 and the color resist protective layer 120 as two flat layers can make the laminated structure have better flatness.

[0038] Please refer to Figure 7 which is a partial cross-sectional schematic view of a display panel of a seventh embodiment of the present application. Figure 7 The display panel DP of the seventh embodiment shown Figure 6 The difference between the sixth embodiment shown and the seventh embodiment shown is that the transparent protective layer 150 is disposed between the color resist protective layer 120 and the substrate 100. For example, the transparent protective layer 150 can be disposed on the insulating layer I1, and the color resist protective layer 120 can be disposed on the transparent protective layer 150 and cover the transparent protective layer 150 entirely. The transparent protective layer 150 includes a fifth opening OP5, which overlaps the third opening OP3 in the direction Z, and the backlight LB emitted by the backlight module BL can sequentially pass through the fifth opening OP5, the third opening OP3, and the fourth opening OP4. That is, the areas corresponding to the fifth opening OP5 of the transparent protective layer 150, the third opening OP3 of the color resist protective layer 120, and the fourth opening OP4 of the conductive layer 130 can form a penetration area, so that the backlight LB emitted by the backlight module BL can pass through the penetration area (for example, sequentially pass through the substrate 100, the insulating layer GI, the insulating layer I1, the insulating layer I2, and the transparent conductive layer 140) to form a penetrating light LT to display a picture. In this embodiment, the backlight LB can penetrate the transparent protective layer 150 and be absorbed by the color resist protective layer 120, so as to avoid stray light penetrating the laminated structure of the display panel DP or reflecting therein and irradiating the thin film transistor 110.

[0039] Please refer to Figure 8 which is a partial cross-sectional schematic view of a display panel of an eighth embodiment of the present application. Figure 8 The display panel DP of the eighth embodiment shown Figure 6The difference in the sixth embodiment shown is that a portion of the transparent protective layer 150 fills the third opening OP3 of the color resist protective layer 120. That is, the transparent protective layer 150 can be disposed between the color resist protective layer 120 and the conductive layer 130, and the transparent protective layer 150 does not have an opening at the position corresponding to the third opening OP3. Specifically, as... Figure 8 As shown, a color resist protective layer 120 can be disposed on an insulating layer I1 and includes a third opening OP3, and a transparent protective layer 150 is disposed on the color resist protective layer 120 and fills the third opening OP3. An insulating layer I2 is disposed on the transparent protective layer 150, and a transparent conductive layer 140 is disposed on the insulating layer I2, with a portion of the transparent conductive layer 140 corresponding to the third opening OP3. A conductive layer 130 is disposed on the transparent conductive layer 140, and a fourth opening OP4 of the conductive layer 130 overlaps with the third opening OP3 of the color resist protective layer 120 in the Z direction and exposes a portion of the transparent conductive layer 140. The area where the third opening OP3, a portion of the transparent protective layer 150, a portion of the transparent conductive layer 140, and the fourth opening OP4 overlap can serve as a transmission area, allowing the backlight LB emitted by the backlight module BL to pass through the transmission area (e.g., but not limited to passing through the substrate 100, insulating layer GI, insulating layer I1, transparent protective layer 150, insulating layer I2, and transparent conductive layer 140 in sequence) to form transmitted light LT for displaying an image. In this embodiment, the transparent protective layer 150 fills the third opening OP3 of the color resist protective layer 120 and has a flat upper surface 150a, which allows the stacked structure to have better flatness. For example, the conductive layer 130 can have better flatness to obtain more stable reflected light LR, or the liquid crystal layer gaps of the liquid crystal layer (not shown) disposed on the conductive layer 130 can have a smaller degree of variation to improve the display quality.

[0040] Please refer to Figure 9 This is a partial cross-sectional schematic diagram of the display panel according to the ninth embodiment of the present invention. Figure 9 The display panel DP of the ninth embodiment shown is Figure 7 The difference in the seventh embodiment shown is that the third opening OP3 of the color resist protective layer 120 overlaps with a portion of the transparent protective layer 150 in the Z direction. That is, the transparent protective layer 150 is disposed between the color resist protective layer 120 and the substrate 100, and the transparent protective layer 150 does not have an opening at the position corresponding to the third opening OP3. Specifically, as... Figure 9As shown, the transparent protective layer 150 can be disposed on the insulating layer I1 and has a planar upper surface 150a, the color resist protective layer 120 is disposed on the transparent protective layer 150 and includes the third opening OP3, and the third opening OP3 exposes a portion of the transparent protective layer 150. The insulating layer I2 is disposed on the color resist protective layer 120, and a portion of the insulating layer I2 is disposed in the third opening OP3 to cover the sidewall thereof. The transparent conductive layer 140 is disposed on the insulating layer I2, and a portion of the transparent conductive layer 140 is disposed in the third opening OP3. The conductive layer 130 is disposed on the transparent conductive layer 140, and the fourth opening OP4 of the conductive layer 130 overlaps the third opening OP3 of the color resist protective layer 120 in the direction Z and exposes a portion of the transparent conductive layer 140. The area where the portion of the transparent protective layer 150, the third opening OP3, the portion of the transparent conductive layer 140, and the fourth opening OP4 overlap can serve as a penetration zone, so that the backlight LB emitted by the backlight module BL can pass through the penetration zone (for example, but not limited to, sequentially pass through the substrate 100, the insulating layer GI, the insulating layer I1, the transparent protective layer 150, the insulating layer I2, and the transparent conductive layer 140) to form the penetration light LT to display a picture. In this embodiment, the transparent protective layer 150 has the planar upper surface 150a overlapping the third opening OP3 of the color resist protective layer 120, which can make the stacked structure have better flatness. For example, the conductive layer 130 can have better flatness to obtain more stable reflected light LR, or the liquid crystal layer gap of the liquid crystal layer (not shown in the figure) disposed on the conductive layer 130 can have a smaller degree of variation to improve the picture display quality.

[0041] In summary, according to the display panel of the embodiment of the present application, the color resist protective layer capable of absorbing light is disposed on the thin film transistor and the substrate in the structural design, which can avoid the reflection, scattering, or penetration of stray light in the stacked structure of the display panel, thereby improving the color contrast. Moreover, the color resist protective layer can serve as a flat layer to fill the topography, and the color resist protective layer overlapping the thin film transistor can also serve as a light shielding layer to reduce the light leakage problem. In addition, the transparent protective layer and the color resist protective layer serve as two flat layers, which can make the stacked structure have better flatness.

[0042] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a thin film transistor disposed on the substrate; a color resist protection layer disposed on the thin film transistor and the substrate, the color resist protection layer overlapping the thin film transistor in a normal direction of the substrate, and the color resist protection layer comprising a first opening, wherein the color resist protection layer is used to absorb at least part of light in a visible light wavelength band; and a conductive layer disposed on the color resist protection layer, and the conductive layer being electrically connected to the thin film transistor through the first opening.

2. The display panel of claim 1, wherein, The color resist protection layer comprises one of black color resist, blue color resist, green color resist and red color resist.

3. The display panel of claim 1, wherein, Further comprising a transparent protection layer disposed on the substrate, and the transparent protection layer at least partially overlapping the color resist protection layer in the normal direction.

4. The display panel of claim 3, wherein, The transparent protection layer is disposed between the color resist protection layer and the conductive layer.

5. The display panel of claim 3, wherein, The transparent protection layer is disposed between the color resist protection layer and the substrate.

6. The display panel of claim 3, wherein, The transparent protection layer comprises a second opening overlapping the first opening in the normal direction, and the conductive layer is electrically connected to the thin film transistor through the first opening and the second opening.

7. The display panel of claim 3, wherein, Further comprising another conductive layer disposed between the transparent protection layer and the color resist protection layer, wherein the transparent protection layer comprises a second opening not overlapping the first opening in the normal direction, and the conductive layer is electrically connected to the other conductive layer through the second opening and is electrically connected to the thin film transistor through the other conductive layer.

8. The display panel of claim 1, wherein, Further comprising a backlight module disposed on a side of the substrate opposite to the thin film transistor, wherein the color resist protection layer further comprises a third opening, wherein a backlight emitted by the backlight module can pass through the third opening.

9. The display panel of claim 8, wherein, The conductive layer is a metal layer comprising a fourth opening overlapping the third opening in the normal direction, and the display panel further comprises a transparent conductive layer disposed between the conductive layer and the color resist protection layer, wherein a part of the transparent conductive layer is disposed corresponding to the third opening.

10. The display panel of claim 9, wherein, Further comprising a transparent protection layer disposed on the substrate, and the transparent protection layer at least partially overlapping the color resist protection layer in the normal direction.

11. The display panel of claim 10, wherein, The transparent protection layer comprises a fifth opening overlapping the third opening in the normal direction, and the backlight can pass through the third opening, the fifth opening and the fourth opening.

12. The display panel of claim 11, wherein, The transparent protection layer is disposed between the color resist protection layer and the conductive layer.

13. The display panel of claim 11, wherein, The transparent protection layer is disposed between the color resist protection layer and the substrate.

14. The display panel of claim 10, wherein, The transparent protection layer is disposed between the color resist protection layer and the conductive layer, and a part of the transparent protection layer fills in the third opening.

15. The display panel of claim 10, wherein, The transparent protection layer is disposed between the color resist protection layer and the substrate, and the third opening overlaps a part of the transparent protection layer in the normal direction.

Images