Reflective display device and electronic apparatus

Abstract

The invention relates to the technical field of display screens, and discloses a reflection type display device which comprises a top substrate, an array substrate and a flowing medium layer, an insulating layer is arranged in each pixel unit of the array substrate and between a pixel electrode and a thin film transistor, the insulating layer is provided with a communicating hole, and the communicating hole is communicated with the flowing medium layer. The array substrate comprises a top substrate and a plurality of pixel electrodes, the pixel electrodes are electrically connected with thin film transistors at communicating holes, filling parts are arranged in the communicating holes, supplementary electrodes are arranged on the filling parts and at least cover the surfaces of the sides, close to the top substrate, of the filling parts, and the filling parts are arranged in the communicating holes in the array substrate, and the supplementary electrodes are arranged on the filling parts. The distance between the top substrate at the communicating hole and the array substrate is the same as that at other positions, so that interference of the communicating hole to an electric field between the top substrate and the array substrate is avoided, the area between the top substrate and the array substrate has the same imaging effect, and the overall display effect of the reflection type display device is improved. The invention further provides electronic equipment comprising the reflection type display device.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, and in particular to a reflective display device and an electronic device. Background Art

[0002] A reflective display screen is a type of display screen that can display under the irradiation of external light without the need for an additional backlight module. Figure 1 As shown, the array substrate in the reflective display screen is usually provided with an insulating layer connection hole in each pixel, and the flow medium at the connection hole is at a different height from that at other positions in the pixel. Therefore, when the electric field is driven, the response speed at this position has a time difference with that at other positions, thereby affecting the consistency of the display area. Summary of the invention

[0003] The present invention aims to solve at least one of the problems in the background technology. To this end, the present invention provides a reflective display device and an electronic device. The reflective display device is reasonably designed to provide a filling portion in a connecting hole on an array substrate, and a supplementary electrode is provided on the filling portion, so as to avoid the connecting hole from interfering with the electric field between the top substrate and the array substrate, so that the area between the top substrate and the array substrate has the same imaging effect, thereby improving the overall display effect.

[0004] According to a first aspect of the present invention, a reflective display device includes a top substrate, an array substrate and a flowing medium layer, wherein the top substrate includes a top electrode; the array substrate includes a plurality of pixel units, each of which includes a bottom substrate, a thin film transistor and a pixel electrode, an insulating layer is provided between the pixel electrode and the thin film transistor, the insulating layer is provided with a connecting hole, and the pixel electrode is electrically connected to the thin film transistor at the connecting hole, wherein a filling portion is provided in the connecting hole, a supplementary electrode is provided on the filling portion, and the supplementary electrode at least covers the surface of the filling portion close to the top substrate; the flowing medium layer is provided between the top substrate and the array substrate, and the flowing medium layer includes a flowing medium. The reflective display device arranges a filling portion in the connecting hole on the array substrate, and arranges a supplementary electrode on the filling portion, so that the distance between the top substrate and the array substrate at the connecting hole is the same as that at other positions, thereby avoiding interference of the connecting hole on the electric field between the top substrate and the array substrate, so that the area between the top substrate and the array substrate has the same imaging effect, thereby improving the overall display effect.

[0005] According to another embodiment of the present invention, the filling portion is a transparent insulating material.

[0006] According to another embodiment of the present invention, the supplementary electrode has the same composition as the pixel electrode.

[0007] According to another embodiment of the present invention, the supplementary electrode is an ITO layer.

[0008] According to another embodiment of the present invention, the supplementary electrode is a light-impermeable electrode layer.

[0009] According to another embodiment of the present invention, the supplementary electrode covers the pattern of the pixel electrode.

[0010] According to another embodiment of the present invention, the thin film transistor includes a gate, a semiconductor, a source and a drain, and the drain and the pixel electrode are electrically connected to each other at the connecting hole.

[0011] According to another embodiment of the present invention, the flowing medium layer includes a supporting wall, the supporting wall is arranged at an edge of the flowing medium layer, and two ends of the supporting wall are respectively connected to the top substrate and the array substrate.

[0012] According to another embodiment of the present invention, the flowing medium is one of electronic paste, electronic ink or liquid crystal.

[0013] An electronic device according to an embodiment of the second aspect of the present invention comprises any one of the above-mentioned reflective display devices.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention discloses a reflective display device and an electronic device. The reflective display device comprises a top substrate, an array substrate and a flowing medium layer. The top substrate comprises a top electrode. The array substrate comprises a plurality of pixel units. Each pixel unit comprises a bottom substrate, a thin film transistor and a pixel electrode. An insulating layer is arranged between the pixel electrode and the thin film transistor. A connecting hole is provided in the insulating layer. The pixel electrode is electrically connected to the thin film transistor at the connecting hole. A filling part is arranged in the connecting hole. A supplementary electrode is arranged on the filling part. The supplementary electrode at least covers a surface of the filling part close to the top substrate. The flowing medium layer is arranged between the top substrate and the array substrate. The flowing medium layer comprises a flowing medium. It can be seen that the reflective display device arranges the filling part in the connecting hole on the array substrate and arranges the supplementary electrode on the filling part, so that the distance between the top substrate and the array substrate at the connecting hole is the same as that at other positions, thereby avoiding electric field signal interference caused by the difference between the distance between the top substrate and the array substrate at the connecting hole and the distance at other positions, thereby making the area between the top substrate and the array substrate have the same imaging effect, thereby improving the overall display effect.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0018] Figure 1 It is a cross-sectional schematic diagram of an embodiment of a reflective display screen in the prior art;

[0019] Figure 2 A cross-sectional schematic diagram of an embodiment of a reflective display device provided in the present application;

[0020] Figure 3 A cross-sectional schematic diagram of another embodiment of the reflective display device provided by the present application;

[0021] Figure 4 A cross-sectional schematic diagram of an embodiment of an array substrate of a reflective display device provided in the present application during the manufacturing process;

[0022] Figure 5 Another cross-sectional schematic diagram of an embodiment of an array substrate of a reflective display device provided in the present application during the manufacturing process;

[0023] Figure 6 A cross-sectional schematic diagram of an embodiment of an electronic device provided by the present application;

[0024] The meanings of the marks in the figure are:

[0025] 1. Reflective display screen; 2. First substrate; 3. Second substrate; 4. Pixel electrode layer;

[0026] 5. Connection hole; 6. Metal layer;

[0027] 10. Electronic equipment;

[0028] 100. Reflective display device;

[0029] 110. top substrate; 111. top electrode;

[0030] 120, flowing medium layer; 121, flowing medium; 122, supporting wall;

[0031] 130, array substrate; 131, bottom substrate; 132, thin film transistor; 1321, gate;

[0032] 1322, semiconductor; 1323, source electrode; 1324, drain electrode; 133, insulating layer; 1331, connecting hole; 134, pixel electrode; 135, filling part; 136, supplementary electrode. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it is to be understood that a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In order to illustrate the reflective display device and electronic device provided by the present application, the following is a detailed description in conjunction with the accompanying drawings and the text description of the embodiments.

[0037] Reference below Figure 1 Describe a reflective display screen 1 in the prior art, such as Figure 1 As shown, the reflective display screen 1 includes a first substrate 2 and a second substrate 3, a connection hole 5 is opened in a pixel unit, and an OC layer is not provided at the connection hole 5, and the pixel electrode layer 4 above the OC layer is directly connected to the bottom metal layer 6, so that the top pixel electrode layer 4 can be connected to the bottom metal layer 6, but the height difference between the connection hole 5 and the first substrate 2 is inconsistent with the height difference at other positions in the pixel electrode layer 4, and the difference is large, so the electric field at the connection hole 5 is different from that at other positions, resulting in inconsistent display imaging time at the connection hole 5 and other positions, and the connection hole 5 will cause abnormality in the display area, affecting the overall display effect.

[0038] Reference below Figure 2-Figure 5 A reflective display device 100 according to an embodiment of the first aspect of the present invention is described. Figure 2-Figure 5As shown, the reflective display device 100 includes a top substrate 110, an array substrate 130 and a flowing medium layer 120. Specifically, the top substrate 110 includes a top electrode 111. The array substrate 130 includes a plurality of pixel units. Each pixel unit includes a bottom substrate 131, a thin film transistor 132 and a pixel electrode 134. An insulating layer 133 is provided between the pixel electrode 134 and the thin film transistor 132 to achieve electrical isolation. The insulating layer 133 is provided with a connecting hole 1331. The pixel electrode 134 is electrically connected to the thin film transistor 132 at the connecting hole 1331. The flowing medium layer 120 is provided between the top substrate 110 and the array substrate 130. The flowing medium layer 120 includes a flowing medium 121. A filling portion 135 is provided in the connecting hole 1331. The filling portion 135 is provided in the connecting hole 1331 to fill the internal space of the connecting hole 1331. Further, a supplementary electrode 136 is provided on the filling portion 135. The supplementary electrode 136 at least covers the surface of the filling portion 135 on the side close to the top substrate 110. It can be understood that the supplementary electrode 136 and the pixel electrode 134 jointly generate an electric field between the top electrode 111, thereby driving the display particles in the flowing medium 121 to arrange to achieve imaging. By arranging the filling portion 135 in the connecting hole 1331 on the array substrate 130 and arranging the supplementary electrode 136 on the filling portion 135, the distance between the top substrate 110 and the array substrate 130 at the connecting hole 1331 is the same as that at other positions, thereby avoiding electric field signal interference caused by the difference between the distance between the top substrate 110 and the array substrate 130 at the connecting hole 1331 and the distance at other positions, and by arranging the supplementary electrode 136, the connecting hole 1331 has the same or similar electric field driving effect as the other positions, thereby making the area between the top substrate 110 and the array substrate 130 have the same imaging effect, thereby improving the overall display effect.

[0039] It should be noted that if Figure 2 and Figure 3As shown, the filling portion 135 can be completely consistent with the shape of the connecting hole 1331. By providing a filling portion 135 with the same shape in the connecting hole 1331, the processing can be made more convenient, and the overall filling and supporting effects of the filling portion 135 can be increased. It can be understood that in some other embodiments, the filling portion 135 may not be completely consistent with the shape of the connecting hole 1331. For example, the shape of the connecting hole 1331 is a truncated cone, and the filling portion 135 has the same shape as the top of the connecting hole 1331 on the side close to the top substrate 110, and the remaining parts have other shapes such as a rectangular parallelepiped. It can be understood that as long as the filling portion 135 has the same shape as the top of the connecting hole 1331 on the side close to the top substrate 110, thereby ensuring that the flow medium 121 at the connecting hole 1331 cannot enter the connecting hole 1331, the shape of the filling portion 135 at the remaining positions of the connecting hole 1331 can be selected according to the applicable scenario.

[0040] It should be noted that the filling portion 135 may be made of a transparent insulating material, so as to achieve electrical isolation between the supplementary electrode 136 and the pixel electrode 134 , and at the same time allow light in the filling portion 135 to pass through, thereby avoiding affecting the imaging of the point.

[0041] It should be noted that the manufacturing method of the filling part 135 and the supplementary electrode 136 of this embodiment can be: Figure 4 As shown, at the connecting hole 1331 of the array substrate 130, a resin material is used, and after coating, exposure, development, and baking, the connecting hole 1331 is filled with the resin material, and then, as shown in FIG. Figure 5 As shown, a conductive film is plated, and after the connecting hole 1331 is filled and leveled, coating, exposure, development, and etching are performed to form a supplementary electrode 136. It can be understood that in some other embodiments, other processing methods can also be used.

[0042] According to one embodiment of the present invention, Figure 2 , Figure 3 and Figure 5 As shown, the filling portion 135 is a transparent insulating material. Specifically, the filling portion 135 can be a resin material, and the resin material can be any one of polymethyl methacrylate, polyethylene terephthalate or polycarbonate. It can be understood that by adopting a transparent resin material, the light of the filling portion 135 can pass through to avoid affecting the imaging of the point. At the same time, the transparent resin material has good insulating properties, and can achieve electrical isolation between the supplementary electrode 136 and the pixel electrode 134.

[0043] According to one embodiment of the present invention, Figure 2 and Figure 5As shown, the supplementary electrode 136 has the same composition as the pixel electrode 134. It can be understood that by setting the supplementary electrode 136 and the pixel electrode 134 as the same film layer, the manufacturing process can be simplified, which is conducive to simplifying the production process.

[0044] According to one embodiment of the present invention, Figure 2 and Figure 5 As shown, the supplementary electrode 136 is an indium tin oxide (ITO) layer. ITO has good electrical conductivity and is cheap, which is beneficial to reducing production costs.

[0045] According to one embodiment of the present invention, Figure 2 and Figure 5 As shown, the supplementary electrode 136 is an opaque electrode layer. Furthermore, the supplementary electrode 136 is a molybdenum layer.

[0046] According to one embodiment of the present invention, Figure 2 and Figure 5 As shown, the supplementary electrode 136 covers the pattern of the pixel electrode 134, that is, the supplementary electrode 136 is uniformly formed along multiple pixel units, and the projection pattern of the supplementary electrode 136 on the bottom substrate 131 covers the projection pattern of the pixel electrode 134 on the bottom substrate 131. This arrangement can improve the uniformity of the display effect at each position.

[0047] It should be noted that the projection pattern of the supplementary electrode 136 on the bottom substrate 131 may partially overlap with the projection pattern of the pixel electrode 134 on the bottom substrate 131 , that is, the area of ​​the supplementary electrode 136 is smaller than the area of ​​the pixel electrode 134 .

[0048] According to one embodiment of the present invention, Figure 2 , Figure 4 and Figure 5 As shown, the thin film transistor 132 includes a gate 1321, a semiconductor 1322, a source 1323 and a drain. The drain and the pixel electrode 134 are connected to each other at the connecting hole 1331 to achieve electrical connection. Further, the reflective display device 100 also includes a scan line (not shown in the figure) and a data line (not shown in the figure). The scan line and the data line intersect with each other and define a plurality of pixel units. Specifically, in each pixel unit, the gate 1321 is connected to the scan line, and the source 1323 is connected to the data line.

[0049] According to one embodiment of the present invention, Figure 2As shown, the flowing medium layer 120 includes a supporting wall 122, which is arranged at the edge of the flowing medium layer 120, and the two ends of the supporting wall 122 are respectively connected to the top substrate 110 and the array substrate 130. By setting the supporting wall 122, the compressive resistance between the top substrate 110 and the array substrate 130 is improved.

[0050] According to one embodiment of the present invention, Figure 2 and Figure 3 As shown, the flowing medium 121 is one of electronic paste, electronic ink or liquid crystal.

[0051] Reference below Figure 6 An electronic device 10 according to an embodiment of the second aspect of the present invention is described. Figure 6 As shown, the electronic device 10 includes a reflective display device 100, which provides a filling portion 135 in a connecting hole 1331 on an array substrate 130, and provides a supplementary electrode 136 on the filling portion 135, so that the distance between the top substrate 110 and the array substrate 130 at the connecting hole 1331 is the same as that at other positions, thereby avoiding electric field signal interference caused by the difference between the distance between the top substrate 110 and the array substrate 130 at the connecting hole 1331 and the distance at other positions, thereby making the area between the top substrate 110 and the array substrate 130 have the same imaging effect, thereby improving the overall display effect.

[0052] The reflective display device and electronic device provided above are preferred embodiments and should not be construed as limiting the scope of protection of the present application. Those skilled in the art should be aware that various improvements or substitutions may be made without departing from the concept of the present application, and all improvements or substitutions should be within the scope of protection of the present application, that is, the scope of protection of the present application should be based on the claims.

[0053] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

Claims

1. A reflective display device, characterized in that: Included are: A top substrate, wherein the top substrate comprises a top electrode; An array substrate, wherein the array substrate comprises a plurality of pixel units, each of the pixel units comprises a bottom substrate, a thin film transistor and a pixel electrode, an insulating layer is arranged between the pixel electrode and the thin film transistor, the insulating layer is provided with a connecting hole, the pixel electrode is electrically connected to the thin film transistor at the connecting hole, wherein a filling portion is arranged in the connecting hole, a supplementary electrode is arranged on the filling portion, and the supplementary electrode at least covers a surface of the filling portion close to the top substrate; A flowing medium layer is disposed between the top substrate and the array substrate, and the flowing medium layer includes a flowing medium.

2. The reflective display device according to claim 1, wherein: The filling part is made of transparent insulating material.

3. The reflective display device according to claim 1, wherein: The supplementary electrode has the same composition as the pixel electrode.

4. The reflective display device according to claim 3, wherein: The supplementary electrode is an ITO layer.

5. The reflective display device according to claim 1, wherein: The supplementary electrode is a light-proof electrode layer.

6. The reflective display device according to claim 1, wherein: The supplementary electrode covers the pattern of the pixel electrode.

7. The reflective display device according to claim 1, wherein: The thin film transistor includes a gate, a semiconductor, a source and a drain, and the drain and the pixel electrode are connected to each other at the connecting hole to achieve electrical connection.

8. The reflective display device according to claim 1, wherein: The flowing medium layer comprises a supporting wall, the supporting wall is arranged at the edge of the flowing medium layer, and two ends of the supporting wall are respectively connected to the top substrate and the array substrate.

9. The reflective display device according to claim 1, wherein: The flow medium is one of electronic paste, electronic ink or liquid crystal.

10. An electronic device, characterized in that: A reflective display device comprising any one of claims 1-9.

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