TWM595775U - Display device - Google Patents

Abstract

A display device including a display panel, a top detection layer, a bottom polarizer, and an electrochromic unit is provided. The display panel includes an active device array substrate and a color filter substrate. The active device array substrate is opposite to the color filter substrate. The top detection layer is disposed on a side of the color filter substrate far away from the active device array substrate, and the bottom polarizer is disposed on a side of the active device array substrate far away from the color filter substrate. The electrochromic unit is disposed on the top detection layer and includes a first electrode layer, a second electrode layer, a substrate, and an electrochromic layer. The first electrode layer is opposite to the second electrode layer, and the second electrode layer is carried by the substrate. The electrochromic layer is disposed between the first electrode layer and the second electrode layer. The first electrode layer is closer to the display panel than the second electrode layer, and the first electrode layer is carried by the top detection layer.

Description

Display device

This novel creation relates to a display device, and in particular to a display control device with high integration and thinness.

Electrochromism refers to the property of showing the change of color and transparency under the action of an external voltage. This property is often used in display devices. As shown in FIG. 1, it shows a conventional display device 1 including a display panel 1000 and an electrochromic unit 2000, wherein the display panel 1000 includes an active element array substrate 1020, a color filter substrate 1040, and a display medium layer 1060 , The upper polarizing layer 1100 and the lower polarizing layer 1200, and the electrochromic unit 2000 includes a first electrode substrate and a second electrode substrate having a thickness T, an electrochromic layer 2300 and an external driving circuit 2400, wherein the first electrode substrate is composed of An electrode layer 2100 is composed of the first substrate 2100a, and the second electrode substrate is composed of the second electrode layer 2200 and the second substrate 2200a. In the conventional display device 1, the display panel 1000 and the electrochromic unit 2000 are formed by their respective processes before being bonded to each other by the adhesive layer 3000. Since the conventional display device 1 includes a first electrode layer The first substrate 2100a of 2100 and the second substrate 2200a for carrying the second electrode layer 2200 will make the display device 1 have an excessively large thickness, making it bulky, expensive, and poor in appearance.

The novel creation provides a display device with highly integrated and thin features.

The display device created by the novel includes a display panel, an upper detection layer, a lower polarizing layer, and an electrochromic unit. The display panel includes an active element array substrate and a color filter substrate. The active element array substrate and the color filter substrate are oppositely arranged. The upper detection layer is disposed on the side of the color filter substrate away from the active element array substrate, and the lower polarization layer is disposed on the side of the active element array substrate away from the color filter substrate. The electrochromic unit is disposed on the upper detection layer and includes a first electrode layer, a second electrode layer, a substrate, and an electrochromic layer. The first electrode layer is disposed opposite to the second electrode layer, and the second electrode layer is carried by the substrate. The electrochromic layer is disposed between the first electrode layer and the second electrode layer. The first electrode layer is closer to the display panel than the second electrode layer, and the first electrode layer is carried by the upper detection layer. The detection layer as described above may be a single optical feature or a composite optical layer. If the single optical feature is used as a photodetector, it is generally known as a polarizing layer; in addition to the basic polarizing layer, the composite optical layer also has 1/4 wave plate, 1/2 wave plate, phase difference plate or other materials with optical effects can be added. However, if the detection layer is a composite optical layer, its thickness is less than the sum of the thicknesses of the optical layers.

In an embodiment of the present invention, a reflective film is further provided between the upper detection layer and the first electrode layer.

In an embodiment of the invention, the material of the first electrode layer includes indium tin oxide (ITO), aluminum zinc oxide (AZO), or a combination thereof.

In an embodiment of the invention, the thickness of the first electrode layer is 0.5 μm to 0.8 μm.

In an embodiment of the invention, the above detection layer is a wire grid polarizing layer.

In an embodiment of the present invention, the materials of the electrochromic layer include inorganic materials, organic materials, or a combination thereof.

In an embodiment of the invention, the above electrochromic unit further includes an external driving circuit. The external driving circuit is electrically connected to the first electrode layer and the second electrode layer.

In an embodiment of the invention, a display medium layer is provided between the active element array substrate and the color filter substrate.

In an embodiment of the invention, the above-mentioned display medium layer includes a non-self-luminous material or a self-luminous material.

Based on the above, since the first electrode layer included in the electrochromic unit of the present invention is carried by a member in the display panel, the display device of the present invention can save the use of at least one substrate. The display device may have a thin profile.

In order to make the above-mentioned features and advantages of the creation of the new model more obvious and understandable, the embodiments are specifically described below and described in detail in conjunction with the accompanying drawings.

Reference will now be made in detail to exemplary embodiments of the novel creation, examples of which are illustrated in the drawings. Wherever possible, the same element symbols are used in the drawings and description to denote the same or similar parts. The novel creation can also be embodied in various forms, and should not be limited to the embodiments described herein. The thickness of layers and regions in the drawings will be exaggerated for clarity. The same or similar reference numbers indicate the same or similar elements, and the following paragraphs will not repeat them one by one. In addition, the directional terms mentioned in the embodiments, for example: up, down, left, right, front or back, etc., are only directions referring to the drawings. Therefore, the terminology used is to illustrate and not to limit the creation of this novel.

2 is a schematic cross-sectional view of a display device according to an embodiment of the invention.

Referring to FIG. 2, a display device 10 according to an embodiment of the present invention includes a display panel 100, an upper detection layer 110, a lower polarizing layer 120 and an electrochromic unit 200.

The display panel 100 includes, for example, an active device array substrate 102, a color filter substrate 104, a sealant (not shown), and a display medium layer 106.

The active element array substrate 102 is disposed opposite to the color filter substrate 104, for example. The active device array substrate 102 and the color filter substrate 104 may include glass substrates, for example. For example, a plurality of active elements (not shown), a plurality of scan lines (not shown), a plurality of data lines (not shown), and a plurality of sub-pixels (not shown) are disposed on the active element array substrate 102, Each sub-pixel can be electrically connected to the corresponding scan line and the corresponding data line in the active device array substrate 102, but the creation of the present invention is not limited to this. For example, a plurality of color filter patterns (not shown), a black matrix (not shown), and a common electrode (not shown) are provided on the color filter substrate 104, but the creation of the present invention is not limited to this.

The sealant (not shown) is disposed between the active device array substrate 102 and the color filter substrate 104, for example. From another perspective, the frame glue is disposed in the non-display area (not shown) of the display panel 100. The non-display area may be located on at least one side of the display area (not shown). For example, the non-display area may surround the display area, but the present invention is not limited thereto. The sealant may include a plurality of sealant spacers (not shown), for example. For example, the sealant is, for example, conductive particles having a specific size or spacers having a specific shape, but the present invention is not limited thereto. The sealant may be formed by curing after irradiating ultraviolet light, for example, and used to bond the active device array substrate 102 and the color filter substrate 104. In this embodiment, the sealant, the active device array substrate 102 and the color filter substrate 104 form an accommodating space.

The display medium layer 106 is disposed between the active device array substrate 102 and the color filter substrate 104, for example. In detail, the display medium layer 106 is filled in the accommodating space formed by the sealant, the active device array substrate 102 and the color filter substrate 104. From another perspective, the display medium layer 106 is at least disposed in the display area of the display panel 100. The display medium layer 106 may include non-self-luminous materials, such as liquid crystal molecules, electrophoretic display media, or other applicable media as examples, but the invention is not limited thereto. In other embodiments, the display medium layer 106 may include a self-luminous material, such as an inorganic material, an organic material, or a combination of the foregoing materials; and another example is an electroluminescent material. In this embodiment, the display medium layer 106 is liquid crystal molecules. The liquid crystal molecules are preferably liquid crystal molecules that can be rotated or switched by a vertical electric field or liquid crystal molecules that can be rotated or switched by a horizontal electric field, but the creation of the new type is not limited to this.

The upper detection layer 110 and the lower polarizing layer 120 are respectively disposed on the side of the color filter substrate 104 away from the active device array substrate 102 and the side of the active device array substrate 102 away from the color filter substrate 104. In detail, as shown in FIG. 2, the upper detection layer 110 is disposed on the surface of the color filter substrate 104 away from the active device array substrate 102, and the lower polarization layer 120 is disposed on the active device array substrate 102 away from the color filter On the surface of the substrate 104. In one embodiment, the upper detection layer 110 is, for example, a wire grid polarizing layer. For example, the upper detection layer 110 includes a plurality of wire grids formed on a substrate (not shown), wherein the plurality of wire grids are staggered and periodically arranged on the substrate. For example, a method for forming a plurality of wire grids is to first form a photoresist layer (not shown) on the wire grid formation layer (not shown), and then perform a nanoimprint process on the photoresist layer to form a staggered arrangement and a period A plurality of photoresists arranged, and then using the plurality of photoresists to perform an etching process on the wire grid forming layer to form a plurality of wire grids. In some embodiments, the upper detection layer 110 may include a metal wire grid (not shown), for example, by etching a plurality of staggered and periodically arranged inscriptions on the surface of the metal layer (not shown) Marks. In another embodiment, the upper detection layer 110 is formed by performing a coating process, for example. For example, the upper detection layer 110 is formed by coating a polyvinyl alcohol-based resin on a substrate, for example. In some embodiments, the upper detection layer 110 is a unitary optical film. That is, the upper detection layer 110 is a polarizing layer for light detection. In other embodiments, the upper detection layer 110 is a composite optical film. For example, the upper detection layer 110 may include a phase difference film, a quarter-wave plate, a half-wave plate, and other films with optical characteristics, and the creation of the present invention is not particularly limited. The lower polarizing layer 120 is, for example, a conventional polarizer, and the creation of this new type is not particularly limited.

The electrochromic unit 200 is disposed on the upper detection layer 110, for example. In this embodiment, the electrochromic unit 200 includes a first electrode layer 210, a second electrode layer 220, a substrate 220a, and an electrochromic layer 230.

The first electrode layer 210 is carried by the upper detection layer 110, for example. In some embodiments, the first electrode layer 210 is in contact with the upper detection layer 110 and is integrally formed with the upper detection layer 110, but the creation of the present invention is not particularly limited. In other embodiments, the first electrode layer 210 may not be in contact with the upper detection layer 110. The material of the first electrode layer 210 may be, for example, a transparent or translucent conductive material. In detail, the material of the first electrode layer 210 includes, for example, indium tin oxide (ITO), aluminum zinc oxide (AZO), or a combination thereof. The first electrode layer 210 is formed by performing a coating process on the upper detection layer 110, for example, and has a thickness T1 of, for example, 0.5 to 0.8 microns. In this embodiment, the first electrode layer 210 is located above the upper detection layer 110 of the display panel 100, that is, the first electrode layer 210 is carried by the upper detection layer 110, instead of additionally providing a substrate to carry the first Electrode layer 210. In other words, the thickness T1 of the first electrode layer 210 may be smaller than the thickness of the electrode substrate in the conventional electrochromic unit 200. Based on this, the display device 10 of the present embodiment can have a reduced thickness and have a thinner characteristic. In some embodiments, the first electrode layer 210 can be used as an electric field shielding layer of the display panel 100.

The second electrode layer 220 is disposed opposite to the first electrode layer 210, for example, and is carried by the substrate 220a, for example. The material of the second electrode layer 220 may be, for example, a transparent or translucent conductive material. In detail, the material of the second electrode layer 220 includes, for example, indium tin oxide (ITO), aluminum zinc oxide (AZO), or a combination thereof. In one embodiment, the thickness T2 of the second electrode layer 220 and the substrate 220a is about 1 mm. The substrate 220a is, for example, a substrate used for carrying electrodes in a conventional electrochromic unit, and the creation of the present invention is not particularly limited. The driving of the electrochromic unit 200 of this embodiment can be achieved, for example, by applying a voltage to the first electrode layer 210 and the second electrode layer 220.

The electrochromic layer 230 is disposed between the first electrode layer 210 and the second electrode layer 220, for example. The material of the electrochromic layer 230 may be, for example, an inorganic material, an organic material, or a combination thereof. The above-mentioned inorganic material may, for example, include WO ₃ , and the above-mentioned organic material may, for example, include an organic solvent; or electrophoretic liquid crystal or cholesterol liquid crystal. In some embodiments, the material of the electrochromic layer 230 is a solid phase, a liquid phase, a liquid crystal phase, or a combination thereof. In some embodiments, when a voltage is applied to the first electrode layer 210 and the second electrode layer 220, the electrochromic layer 230 will undergo a redox reaction to produce a color change.

For example, when the electrochromic layer 230 includes an organic material, the organic materials may each exhibit different colors when performing an oxidation reaction or a reduction reaction. Therefore, the color developed by the electrochromic layer 230 can be determined by applying a positive voltage or a negative voltage or whether the voltage is applied to the first electrode layer 210 and the second electrode layer 220.

In some embodiments, the electrochromic unit 200 further includes an external driving circuit 240. The first electrode layer 210 and the second electrode layer 220 may be electrically connected to the external driving circuit 240, for example, to apply a positive voltage or a negative voltage to the first electrode layer 210 and the second electrode layer 220 through separate control of the external driving circuit 240 Voltage or applied voltage. The external driving circuit 240 may be, for example, any circuit unit that can supply a driving voltage, and the present invention is not limited thereto.

In this embodiment, the components included in the electrochromic unit are sequentially formed on the display panel, instead of being adhered to each other by an adhesive layer after each formation, based on this, the first electrode included in the electrochromic unit The layer is carried by the upper detection layer of the display panel rather than the conventional substrate. In other words, the thickness of the electrochromic unit can be reduced, and it also omits the thickness occupied by the adhesive layer, so that the display device of this embodiment has the advantage of thinning.

3 is a schematic cross-sectional view of a display device according to another embodiment of the invention. It must be noted here that the embodiment shown in FIG. 3 follows the element numbers and some contents of the embodiment of FIG. 2, wherein the same or similar reference numbers are used to indicate the same or similar elements, and the description of the same technical content is omitted . For the description of the omitted parts, reference may be made to the description and effects of the foregoing embodiments. The following embodiments will not be repeated, and at least a part of the descriptions in the embodiment shown in FIG. 3 may be referred to the subsequent content.

Please refer to FIG. 3. The display device 20 according to an embodiment of the present invention further includes a reflective film 250. The reflective film 250 is disposed between the upper detection layer 110 and the first electrode layer 210, for example. The reflective film 250 can be used, for example, to reflect ambient light to complete a display operation.

In this embodiment, the components included in the electrochromic unit are sequentially formed on the display panel, instead of being adhered to each other by an adhesive layer after each formation, based on this, the first electrode included in the electrochromic unit The layer is carried by the upper detection layer of the display panel rather than the conventional substrate. In other words, the thickness of the electrochromic unit can be reduced, and it also omits the thickness occupied by the adhesive layer, so that the display device of this embodiment has the advantage of thinning.

In summary, the display device created by the present invention includes a display panel and an electrochromic unit. The components (such as the first electrode layer) included in the electrochromic unit are sequentially formed on the display panel. Therefore, The first electrode layer is carried by the upper detection layer of the display panel rather than the conventional substrate. In other words, the thickness of the electrochromic unit can be reduced, and there is no need to use an adhesive layer to fit the display panel and the electrochromic unit, so that the thickness of the electrochromic unit created by the present invention can be much smaller than that of the conventional electric The thickness of the colorimetric unit. Based on this, the display device created by the present invention has the advantages of high integration and thinness.

Although the new creation has been disclosed as above with examples, it is not intended to limit the creation of the new creation. Anyone with ordinary knowledge in the technical field of the subject can make some changes and without departing from the spirit and scope of the creation of the new creation. Retouching, so the scope of protection of this new creation shall be subject to the scope defined in the appended patent application.

1, 10, 20: display device 100, 1000: display panel 102, 1020: Active element array substrate 104, 1040: color filter substrate 106, 1060: display medium layer 110: Upper detection level 120, 1200: lower polarizing layer 200, 2000: electrochromic unit 210, 2100: the first electrode layer 220, 2200: second electrode layer 220a, 2100a, 2200a: substrate 230, 2300: electrochromic layer 240, 2400: external drive circuit 250: reflective film 1100: upper polarizing layer 3000: adhesive layer T, T1, T2: thickness

FIG. 1 is a schematic cross-sectional view of a conventional display device. 2 is a schematic cross-sectional view of a display device according to an embodiment of the invention. 3 is a schematic cross-sectional view of a display device according to another embodiment of the invention.

10: display device

100: display panel

102: Active component array substrate

104: color filter substrate

106: display medium layer

110: Upper detection level

120: Lower polarizing layer

200: electrochromic unit

210: first electrode layer

220: second electrode layer

220a: substrate

230: electrochromic layer

240: external drive circuit

T1, T2: thickness

Claims (9)

A display device, including: A display panel includes an active element array substrate and a color filter substrate, wherein the active element array substrate and the color filter substrate are oppositely arranged; An upper detection layer and a lower polarization layer, wherein the upper detection layer is disposed on a side of the color filter substrate away from the active device array substrate, and the lower polarization layer is disposed on the active device array substrate A side away from the color filter substrate; and The electrochromic unit, disposed on the upper detection layer, includes: Substrate A first electrode layer and a second electrode layer, wherein the first electrode layer is disposed opposite to the second electrode layer, and the second electrode layer is carried by the substrate; and An electrochromic layer is provided between the first electrode layer and the second electrode layer; Wherein the first electrode layer is closer to the display panel than the second electrode layer, The first electrode layer is carried by the upper detection layer. The display device according to item 1 of the patent application scope, wherein a reflective film is further provided between the upper detection layer and the first electrode layer. The display device according to item 1 of the patent application range, wherein the material of the first electrode layer includes indium tin oxide (ITO), aluminum zinc oxide (AZO), or a combination thereof. The display device according to item 1 of the patent application range, wherein the thickness of the first electrode layer is 0.5 μm to 0.8 μm. The display device according to item 1 of the patent application scope, wherein the upper detection layer is a wire grid polarizing layer. The display device according to item 1 of the patent application range, wherein the material of the electrochromic layer includes an inorganic material, an organic material, or a combination thereof. The display device according to item 1 of the patent application scope, wherein the electrochromic unit further includes an external driving circuit electrically connected to the first electrode layer and the second electrode layer. The display device according to item 1 of the patent application scope, wherein a display medium layer is provided between the active element array substrate and the color filter substrate. The display device according to item 8 of the patent application range, wherein the display medium layer includes a non-self-luminous material or a self-luminous material.

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