TWI576626B - Display device - Google Patents

Description

Display device

The present disclosure relates to a display device, and more particularly to a display device having a light guiding structure.

In today's daily life, flat panel display applications can be seen everywhere, such as mobile phones, personal digital assistants, GPS, digital cameras and other 3C products are closely related to life. If it is a transparent display, in addition to displaying images or data, the user can also observe the image behind the display through the display itself. These products can be applied to vending machines, window displays, food display in shopping malls and Museum display, etc. Display media such as liquid crystal displays (LCDs), organic light emitting diodes (OLED) displays, and electro-wetting displays (EWD) can be applied to transparent displays.

In a transparent display, since the metal trace, the thin film transistor (TFT), or the ink shrinkage area of the electrowetting display is an opaque area, the transmittance of the backlight from the rear of the display is insufficient. It affects the user's view of the image behind the monitor.

An embodiment of the present disclosure provides a display device including: a first substrate; a second substrate, the second substrate is disposed opposite to the first substrate, The first substrate is adjacent to a display surface of the display device; a display device layer is disposed between the first substrate and the second substrate; and a non-transmissive structure is disposed between the display device layer and the second substrate, the non-transparent structure is defined At least one open area of the display device; a light guiding structure is disposed on the non-transmissive structure, and corresponds to at least one open area, wherein the non-transmissive structure is located between the light guiding structure and the display element layer, and the light guiding structure further comprises a plurality of Insulating structure, each insulating structure has a first surface adjacent to the non-transmissive structure and a side surface connected to the first surface; a reflective layer is disposed on the side surface, wherein ambient light incident from the second substrate side is reflected The layer reflects and exits through the open area.

Another embodiment of the disclosure provides a display device, a display device The first substrate is disposed on the first substrate; the second substrate is disposed opposite to the first substrate, wherein the first substrate is adjacent to a display surface of the display device; a display device layer is disposed between the first substrate and the second substrate; a non-transparent structure is disposed between the display element layer and the second substrate, the non-transparent structure defines at least one open area of the display device; and the plurality of insulating structures are disposed on the non-transmissive structure, wherein the non-transparent structure is located Between the insulating structure and the display element layer, each insulating structure has a first surface adjacent to the non-transmissive structure and a side surface connected to the first surface; and an electrochromic block located in the non-transparent structure and Between the two substrates, the electrochromic block includes: a first transparent electrode corresponding to at least one open area; a conductive layer disposed on the side surfaces of the insulating structures; and an electrochromic medium adjacent to the first Transparent electrode and conductive layer.

In order to make the disclosure more apparent, the following embodiments are described in detail with reference to the accompanying drawings.

100, 100', 200, 200', 300, 400, 500, 600, 700, 1000, 1010, 1020, 1030‧‧‧ display devices

100A, 200A, 300A, 400A, 500A, 600A, 700A, 1000A, 1010A, 1020A, 1030A‧‧‧ display surface

110‧‧‧First substrate

120‧‧‧second substrate

120a, 390a, 390b‧‧‧ surface

130‧‧‧Display component layer

130a‧‧‧Display media layer

130b‧‧‧first electrode

130c‧‧‧second electrode

140‧‧‧Non-light transmission structure

140B, 140G, 140R‧‧‧Lighting structure

150‧‧‧Open area

160‧‧‧Light guiding structure

170‧‧‧Insulation structure

180‧‧‧reflective layer

190‧‧‧flat layer

280‧‧‧ Conductive layer

310‧‧‧First transparent electrode

320‧‧‧Electrochromic medium

330‧‧‧First electrochromic material layer

340‧‧‧Second transparent electrode

350‧‧‧Second layer of electrochromic material

360‧‧‧ electrolyte layer

390‧‧‧ third substrate

800, 900‧‧‧ electrochromic blocks

a, b, d‧‧‧ section length

A‧‧‧ area

H, T1, T2, T3‧‧‧ thickness

L‧‧‧ Ambient light

L’‧‧‧Out of light

L1, L2‧‧‧ extension cord

R, G, B‧‧ ‧ sub-pixels

S1‧‧‧ first surface

S2‧‧‧ second surface

S3‧‧‧ side surface

TFT‧‧‧thin film transistor

Θ1, θ2, θ2', θ3‧‧‧ angle

FIG. 1A is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure.

FIG. 1B is a schematic cross-sectional view showing a display device according to still another embodiment of the present disclosure.

FIG. 2 is a simulation diagram showing the relationship between the angle between the second surface and the side surface of the insulating structure and the ambient light transmittance according to an embodiment of the present disclosure.

FIG. 3A is a schematic cross-sectional view of a display device according to another embodiment of the present disclosure.

FIG. 3B is a schematic cross-sectional view of a display device according to a further embodiment of the present disclosure.

FIG. 4A is a partial top view of the open area and the non-light transmitting structure of the display device according to an embodiment of the present disclosure.

Fig. 4B is a partial top view of the open area and the non-light transmitting structure of the display device as shown in Fig. 1A.

Fig. 4C is a partial top view of the open area and the non-light transmitting structure of the display device as shown in Fig. 3A.

FIG. 5 is a top view of an open area and a non-light transmitting structure of a display device according to another embodiment of the present disclosure.

6A to 6B are top views of the open area and the non-light transmitting structure of the display device according to still another embodiment of the present disclosure.

FIG. 7 is a top view of the open area and the non-light transmitting structure of the display device according to the embodiment of the present disclosure.

FIG. 8 is a cross-sectional view of a display device according to still another embodiment of the present disclosure.

FIG. 9 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

FIG. 10 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

FIG. 11 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

FIG. 12 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure. intention.

FIG. 13 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

Figure 14 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

Figure 15 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

FIG. 16 is a cross-sectional view showing a display device according to still another embodiment of the present disclosure.

The disclosure of the specification below provides a number of different embodiments or examples to implement various features of the various embodiments disclosed herein. The disclosure of the present specification is a specific example of the various components and their arrangement in order to simplify the description. Of course, these specific examples are not intended to limit the disclosure. In addition, different examples in the description of the disclosure may use repeated reference symbols and/or words. These repeated symbols or words are not intended to limit the relationship of the various embodiments and/or the appearance structures for the purpose of simplicity and clarity. Furthermore, if the disclosure of the present specification describes the formation of the first feature on or above a second feature, that is, it includes an embodiment in which the formed first feature is in direct contact with the second feature. Also included is an embodiment in which additional features are formed between the first feature and the second feature described above, such that the first feature and the second feature may not be in direct contact.

FIG. 1A is a cross-sectional view of a display device 100 according to an embodiment of the present disclosure. intention. In this embodiment, the display device 100 is, for example, a transparent display device, that is, in addition to the information displayed by the display surface 100A of the display device 100, the backlight from the back of the display device 100 and passing through the display device 100 may also be displayed by the display device. The display surface 100A of 100 is observed. As shown in FIG. 1A , the display device 100 includes a first substrate 110 , a second substrate 120 , a display device layer 130 , a non-transmissive structure 140 , a light guiding structure 160 , and a reflective layer 180 . The second substrate 120 is disposed opposite to the first substrate 110. The first substrate 110 is adjacent to the display surface 100A of the display device 100, that is, the viewer views the display information of the display device 100 from the first substrate 110 side. The display element layer 130 is disposed between the first substrate 110 and the second substrate 120. The non-transmissive structure 140 is disposed between the display element layer 130 and the second substrate 120, and the non-transmissive structure 140 defines at least one open area 150 of the display device 100. The light guiding structure 160 is disposed on the non-light transmitting structure 140 and corresponds to at least one opening region 150. The non-transparent structure 140 is located between the light guiding structure 160 and the display element layer 130. The light guiding structure 160 further includes a plurality of insulating structures 170. Each of the insulating structures 170 has a first surface S1 adjacent to the non-transmissive structure 140 and Connected to one side surface S3 of the first surface S1. The reflective layer 180 is disposed on the side surface S3, wherein the ambient light L incident from the second substrate 120 side is reflected via the reflective layer 180 and exits through the open region 150. That is, the ambient light L is reflected between the insulating structures 170 by the reflective layer 180, and is further emitted by the open region 150. The outgoing light L' is as shown in FIG. 1A, and the ambient light L is reflected between the insulating structures 170. The number of 180 reflections can be one or more times.

In some embodiments, the light guiding structure 160 is disposed on the non-transmissive structure 140 Up and corresponding to the opening region 150; for example, the light guiding structure 160 may enclose the opening region 150 in a closed manner, or the light guiding structure 160 may also surround only a portion of the opening region 150. As shown in FIG. 1A, the light guiding structure 160 is disposed on the non-transmissive structure 140 and the second base. Between the plates 120.

According to an embodiment of the present disclosure, the light that the non-transmissive structure 140 has The penetration rate is, for example, less than 50%. In some embodiments, the non-transmissive structure 140 may be a pixel circuit structure, such as a thin film transistor (TFT), a capacitor structure, a metal wire, may be a black matrix, or may be an ink shrinkage of an electrowetting display element. Area.

According to an embodiment of the present disclosure, the reflective layer 180 of the display device The ambient light L originally incident on the non-transmissive structure 140 region is reflected and emitted from the opening region 150, so that the ambient light L can be effectively utilized, thereby improving the light utilization efficiency of the display device.

A cross-sectional view of the display device 100 as shown in FIG. 1A, each insulation The structure 170 may further include a second surface S2 with respect to the first surface S1, and the second surface S2 is coupled to the first surface S1 via the side surface S3. In an embodiment, the area of the first surface S1 is larger than the area of the second surface S2, and the side surface S3 is connected to the edge of the first surface S1 and the second surface S2, and the insulating structure 170 has a thickness H, the first surface S1 The cross section has a section length a, and the cross section of the second surface S2 has a section length b. The angle between the side surface S3 of the insulating structure 170 and the extension line L1 of the second surface S2 is such that the ambient light L has a higher transmittance. Θ1 may be, for example, greater than or equal to 50°, that is, H/((ab)/2) is greater than or equal to tan 50°. In one embodiment, when the cross-sectional length a of the first surface S1 is equal to the cross-sectional length d of the non-transmissive structure 140 (not shown in FIG. 1A), the transmittance of the ambient light L is better. In other embodiments, the cross-sectional length a of the first surface S1 may also be slightly smaller than the cross-sectional length d of the non-transmissive structure 140.

Referring again to FIG. 1A, the display device 100 may further include a flat The flat layer 190 may be interposed between the non-transmissive structure 140 and the display element layer 130.

FIG. 1B is a cross section of a display device 100' according to still another embodiment of the present disclosure. schematic diagram. The components in FIG. 1B are substantially the same as those in the first embodiment, and the same components are used, and the related descriptions of the same components are referred to the foregoing, and the description thereof will not be repeated here. In this embodiment, the position of the second substrate 120 in the display device 100' can also be selectively changed, and the display device 100' does not include the flat layer 190 as shown in Fig. 1A. As shown in FIG. 1B, the second substrate 120 is located between the non-transmissive structure 140 and the insulating structure 170.

As shown in FIGS. 1A-1B, in the embodiment, the display element layer 130 can be packaged. The display dielectric layer 130a, the first electrode 130b, and the second electrode 130c are disposed between the first electrode 130b and the second electrode 130c. In an embodiment, the display medium layer 130a may be at least one of a liquid crystal display medium, an organic light emitting diode display medium, or an electrowetting display medium, but is not limited thereto. The display element layer 130 may be an Active Matrix display element or a Passive Matrix display element, but is not limited thereto. In one embodiment, when the display element layer 130 is an organic light emitting diode (OLED) display element, the display medium layer 130a may further include a hole injection layer and a hole transmission in addition to the first electrode 130b and the second electrode 130c. a layer, a light-emitting layer, an electron transport layer, an electron injection layer, and the like.

2 is a second surface of the insulating structure 170 in an embodiment of the present disclosure A simulation relationship diagram between the angle θ1 between the extension line L1 of S2 and the side surface S3 and the transmittance of the ambient light L. As can be seen from Fig. 2, when the angle θ1 is greater than or equal to 50°, the transmittance of the ambient light L is significantly increased.

Please refer to FIG. 3A , which is a display device according to another embodiment of the disclosure. Schematic diagram of the section. In this embodiment, the display device 200 can also be, for example, a transparent display device, that is, in addition to the information displayed on the display surface 200A of the display device 200, The backlight passing through the display device 200 on the back side of the display device 200 can also be observed by the display surface 200A of the display device 200. The components in FIG. 3A are substantially the same as those in the first embodiment of FIG. 1A, and the same components are used, and the related descriptions of the same components are referred to the foregoing, and the description thereof will not be repeated here. The display device 200 of FIG. 3A is similar in structure to the display device 100 of FIG. 1A, and the difference between the display device of FIG. 3A and FIG. 1A is that the side of each adjacent insulating structure 170 in the display device 200 of FIG. The surface S3 is connected to each other, that is, the cross-sectional length b of the second surface S2 is equal to 0 (that is, the second surface S2 is not provided), and the ambient light L incident from the second substrate 120 side is entirely incident on the reflective layer 180. The reflective layer 180 reflects and exits through the open area 150. That is, the ambient light L is reflected by the reflective layer 180 between the insulating structures 170, and is further emitted by the opening region 150. The number of times the ambient light L is reflected by the reflective layer 180 between the insulating structures 170 may be one or more times. Under such conditions, the transmittance of ambient light L is better.

In the embodiment shown in FIG. 3A, the insulating structure 170 has a thickness. H, the cross section of the first surface S1 has a section length a, and the insulating structure 170 is, for example, abutting against a surface 120a of the second substrate 120; in order to make the ambient light L have a higher transmittance, the side surface S3 of the insulating structure 170 The angle θ2 with the surface 120a of the second substrate 120 may be, for example, greater than or equal to 50°, that is, H/(a/2) is greater than or equal to tan 50°.

FIG. 3B is a cross-sectional view showing a display device according to a further embodiment of the present disclosure intention. The components in FIG. 3A are substantially the same as those in the above-mentioned drawings, and the same components are used, and the related descriptions of the same components are referred to the foregoing, and the description thereof will not be repeated here. In this embodiment, the position of the second substrate 120 in the display device 200' can also be selectively changed, and the display device 200' does not include the flat layer 190 as shown in Fig. 3A. As shown in FIG. 3B, the second substrate 120 is located between the non-transmissive structure 140 and the insulating structure 170. In this embodiment, as shown in FIG. 3B, an extension line L2 is The top end 170a of the insulating structure 170 extends, and the extending direction of the extension line L2 is parallel to the first surface S1 of the insulating structure 170, and the angle θ2' between the side surface S3 of the insulating structure 170 and the extension line L2 may be, for example, greater than or equal to 50. °, that is, H / (a / 2) is greater than or equal to tan 50 °.

FIG. 4A is an open area of the display device according to an embodiment of the present disclosure A top view of the light transmissive structure, shown as a schematic view of a single open area 150 and a corresponding non-transmissive structure 140. According to an embodiment of the present disclosure, the display device may have a plurality of repeatedly arranged open areas 150 and a non-transmissive structure 140. The open area 150 may have a shape of a circle, an ellipse, a rectangle, a diamond, a hexagon, a polygon, or Irregular shape, but not limited to this. In this embodiment, the open area 150 is located at the center of the non-light transmitting structure 140 and is symmetrically arranged, but the relative position of the open area 150 and the non-light transmitting structure 140 depends on the component design of the display device, and is not limited to the 4A. The shape shown in the figure. Please refer to FIG. 1A, FIG. 4A and FIG. 4B simultaneously. In an embodiment, FIGS. 4A and 4B are the open area 150 and the non-transmissive structure 140 of the display device 100 as shown in FIG. 1A. A partial top view of the relative position, wherein FIG. 4A is a top view viewed from the side of the first substrate 110, and FIG. 4B is a top view viewed from the side of the second substrate 120. In addition to the open area 150 and the non-transmissive structure 140, the area A represents the area where the ambient light L that would otherwise be shielded by the non-transmissive structure 140 is guided to the open area 150 by the light guiding structure 160, that is, the insulating structure 170. A reflective layer 180 is provided. 4C is a partial top view of the open area and the non-transmissive structure of the display device 200 as shown in FIG. 3A of the present disclosure, wherein FIG. 4C is a top view from the side of the second substrate 120. The area A represents the area where the ambient light L that would otherwise be shielded by the non-transmissive structure 140 is guided to the open area 150 by the light guiding structure 160, that is, the reflective layer 180 provided on the insulating structure 170.

FIG. 5 is a view showing an open area of a display device according to another embodiment of the present disclosure A top view of the light transmissive structure, shown as a schematic view of three open regions 150 and corresponding non-transmissive structures 140. According to an embodiment of the present disclosure, the display device may have more than three overlapping regions 150 and a non-transmissive structure 140. The shape of the opening region 150 may be circular, elliptical, rectangular, rhombic, hexagonal. , polygon or irregular shape, but not limited to this. In this embodiment, the open area 150 is not located at the center of the non-transmissive structure 140, and the area A indicates the area where the ambient light L that would otherwise be shielded by the non-transmissive structure 140 is guided to the open area 150 by the light guiding structure 160. That is, the reflective layer 180 disposed on the insulating structure 170. In an embodiment, the structure as shown in FIG. 5 may include, for example, three sub-pixels, such as sub-pixel R, sub-pixel G, and sub-pixel B. Each sub-pixel has an open area 150 below the open area 150. The portion of the non-transmissive structure 140 may be, for example, a light-emitting structure of each sub-pixel.

6A to 6B are diagrams showing a display device according to still another embodiment of the present disclosure A top view of the open area and the non-transmissive structure, the figure shows a schematic view of the four open areas 150 and the corresponding non-transmissive structure 140, wherein the 6A is a top view from the side of the first substrate 110, Fig. 6B is a top view from the side of the second substrate 120. In this embodiment, the open area 150 is located at the center of the non-transparent structure 140, and the area A indicates the area where the ambient light L that would otherwise be shielded by the non-transmissive structure 140 is guided to the open area 150 by the light guiding structure 160. It is the reflective layer 180 provided on the insulating structure 170. In an embodiment, the structure as shown in FIGS. 6A-6B may include, for example, four square sub-pixels, each sub-pixel having an open area 150, and adjacent sub-pixels may share a light-emitting structure, such as adjacent The two sub-pixels can share the light-emitting structure 140G. The light-emitting structures 140R, 140G, and 140B and the thin film transistor TFT of each sub-pixel constitute a non-transmissive structure 140.

Figure 7 is a view showing an open area of the display device according to a further embodiment of the present disclosure. A top view of the light transmissive structure, shown as a plurality of repeatedly arranged open areas 150, wherein the seventh view is a top view from the side of the second substrate 120. In this embodiment, the shape of the open area 150 is, for example, a hexagon. The open area 150 is located at the center of the non-transmissive structure 140. The area A indicates the area of the open area 150 that is originally shielded by the non-transmissive structure 140 from the light guiding structure 160, that is, the insulating structure 170. The reflective layer 180 is provided.

FIG. 8 is a cross-sectional view of a display device 300 according to still another embodiment of the present disclosure. intention. The same components as those in the foregoing embodiments are denoted by the same reference numerals, and the related descriptions of the same components are referred to the foregoing, and are not described herein again.

As shown in FIG. 8, in this embodiment, the display device 300 is, for example, The transparent display device, that is, the background light from the back surface of the display device 300 and passing through the display device 300 may be observed by the display surface 300A of the display device 300 in addition to the information displayed by the display surface 300A of the display device 300. As shown in FIG. 8, the display device 300 includes a first substrate 110, a second substrate 120, a display element layer 130, a non-transmissive structure 140, and a plurality of insulating structures 170. The second substrate 120 is disposed opposite to the first substrate 110. The first substrate 110 is adjacent to the display surface 300A of the display device 300, that is, the viewer views the display information of the display device 300 from the first substrate 110 side. The display element layer 130 is disposed between the first substrate 110 and the second substrate 120. The non-transmissive structure 140 is disposed between the display element layer 130 and the second substrate 120, and the non-transmissive structure 140 defines at least one open area 150 of the display device 300. The insulating structure 170 is disposed on the non-transmissive structure 140, and the non-transmissive structure 140 is located between the insulating structure 170 and the display element layer 130. Each of the insulating structures 170 has a first surface S1 adjacent to the non-transmissive structure 140 and is connected to the first The side surface S3 of the surface S1.

In this embodiment, the display device 300 may further include at least one electrochromic An electrochromic block 800 is disposed between the non-transmissive structure 140 and the second substrate 120. The ambient light L incident from the side of the second substrate 120 passes through the electrochromic block 800 and exits through the open area 150.

In an embodiment, as shown in FIG. 8, the display device 300 further includes a The third substrate 390, the display element layer 130 and the non-light transmitting structure 140 are formed on one surface 390a of the third substrate 390, and the insulating structure 170 is formed on the other opposing surface 390b of the third substrate 390. In another embodiment, the display device 300 can also optionally include a flat layer (not shown in FIG. 8), and does not include the third substrate 390; the flat layer is non-transparent as shown in FIG. 1A. The structure 140 is between the display element layer 130.

In this embodiment, the cross-sectional length a of the first surface S1 is greater than the non-transmissive junction. The cross-sectional length d of the structure 140. Further, in an embodiment, when the cross-sectional length a of the first surface S1 can be equal to, for example, the cross-sectional length d of the non-transmissive structure 140 (not shown in FIG. 8).

In this embodiment, as shown in FIG. 8, the electrochromic block 800 can be packaged. A first transparent electrode 310, a conductive layer 280 and an electrochromic medium 320 are included. The first transparent electrode 310 is disposed corresponding to the at least one opening region 150, for example, covering an opening region 150. The conductive layer 280 is disposed on the side surfaces S3 of the insulating structures 170, and the conductive layer 280 is used as an electrode. The electrochromic medium 320 is adjacent to the first transparent electrode 310 and the conductive layer 280. In an embodiment, the conductive layer 280 and the first transparent electrode 310 are electrically insulated from each other. As shown in FIG. 8, in the embodiment, the angle θ3 between the first transparent electrode 310 and the conductive layer 280 is, for example, less than 180°. As shown in FIG. 8, in the embodiment, the first transparent electrode 310 is located between the display element layer 130 and the electrochromic medium 320, for example. In the embodiment, the conductive layer 280 is, for example, a metal layer having conductivity as an electrode material, and the first transparent electrode 310 is, for example, Indium Tin Oxide (ITO) or nano silver wire. (silver nanowire), carbon nanotube, graphene, conductive polymer, or a combination of any two of the above. In an embodiment, the conductive layer 280 and the first transparent electrode 310 may be made of the same material, for example.

In an embodiment, the conductive layer 280 can also be reflective, for example In the reflective metal layer, the ambient light L incident from the second substrate 120 side can be reflected via the reflective conductive layer 280 and emitted through the opening region 150. That is, the ambient light L is reflected between the insulating structures 170 by the reflective conductive layer 280, and is further emitted by the opening region 150. The outgoing light L' is as shown in FIG. 8, and the ambient light L is in the insulating structure 170. The number of times reflected by the reflective conductive layer 280 may be one or more times.

In an embodiment, the electrochromic medium 320 is, for example, a mixture that can be packaged. An electrochromic material and an electrolyte are disposed in the sealed chamber, such as in a closed chamber formed by the sidewalls of the insulating structure 170, the surface 120a of the second substrate 120, and the first transparent electrode 310. When not energized, the color of the mixture material is transparent; after energization, the electrochromic material in the mixture undergoes a redox reaction on the surface of the first transparent electrode 310 to change color, for example, black, so that it can be shielded The background light image causes the display surface 300A of the display device 300 to display only the image that is intended to be displayed, thereby improving the contrast of the display image of the transparent display device.

Furthermore, as shown in FIG. 8, the first transparent electrode 310 covers the open area 150 and parallel to the second substrate 120, and the conductive layer 280 is located on the sidewall of the insulating structure 170. Compared to the conventional two electrodes disposed on the same plane, according to an embodiment of the present disclosure, the first transparent electrode 310 The angle between the conductive layer 280 and the conductive layer 280 is less than 180°, so that the distance of the current direction can be shortened, thereby increasing the reaction speed. It is possible to increase the discoloration speed of the electrochromic block. In one embodiment, the angle between the first transparent electrode 310 and the conductive layer 280 is, for example, 50 to 130°; in another embodiment, the angle between the first transparent electrode 310 and the conductive layer 280 is, for example, 90 to 120°. .

In embodiments, the electrochromic material may include a transition metal oxide (transition metal oxide), Prussian blue, viologen, conducting polymer, metallopolymer and metal phthalocyanines . The electrolyte may include at least one of an aqueous lithium ion solution, an aqueous hydrogen ion solution, an aqueous sodium ion solution, an aqueous potassium ion solution, propylene carbonate, ethylene carbonate, and dimethyl carbonate.

FIG. 9 is a cross section of a display device 400 according to still another embodiment of the present disclosure. schematic diagram. The same components as those in the foregoing embodiments are denoted by the same reference numerals, and the related descriptions of the same components are referred to the foregoing, and are not described herein again.

As shown in FIG. 9, in this embodiment, the display device 400 is, for example, The transparent display device, that is, the background light from the back surface of the display device 400 and passing through the display device 400 can be observed by the display surface 400A of the display device 400 in addition to the information displayed by the display surface 400A of the display device 400. The main difference between the display device 400 of the present embodiment and the display device 300 of the foregoing embodiment is that the side surfaces S3 of each adjacent insulating structure 170 are connected to each other. As shown in FIG. 9, the insulating structure 170 is abutted against the surface 120a of the second substrate 120 such that a separate chamber of the independent electrochromic medium 320 is formed between the respective insulating structures 170. The background light image can be shielded by the setting of the electrochromic block 800, so that the display surface 400A of the display device 400 displays only the image that is intended to be displayed, thereby improving the display of the transparent display device. Comparison of images. It should be noted that the structural design of the side surfaces S3 of the present embodiment connected to each other can also be applied to other embodiments, and the design of different electrochromic blocks in other embodiments can also be applied to different embodiments. In the structure. It is not limited to the single aspect of the various embodiments.

FIG. 10 is a cross-sectional view of a display device 500 according to still another embodiment of the present disclosure. Schematic diagram. The same components as those in the foregoing embodiments are denoted by the same reference numerals, and the related descriptions of the same components are referred to the foregoing, and are not described herein again.

As shown in FIG. 10, in this embodiment, the display device 500 is, for example, The transparent display device, that is, the background light from the back surface of the display device 500 and passing through the display device 500 may be observed by the display surface 500A of the display device 500 in addition to the information displayed by the display surface 500A of the display device 500. The main difference between the display device 500 of the present embodiment and the display device of the foregoing embodiment is the position at which the first transparent electrode 310 is disposed. As shown in FIG. 10, the first transparent electrode 310 is, for example, located between the electrochromic medium 320 and the second substrate 120. The background light image can be shielded by the setting of the electrochromic block 800, so that the display surface 500A of the display device 500 displays only the image that is intended to be displayed, thereby improving the contrast of the display image of the transparent display device.

11 is a display device according to still another embodiment of the present disclosure A schematic view of the profile of 600. The same components as those in the foregoing embodiments are denoted by the same reference numerals, and the related descriptions of the same components are referred to the foregoing, and are not described herein again. As shown in FIG. 11, in this embodiment, the display device 600 is, for example, a transparent display device, that is, from the back of the display device 600 and passing through the display device 600, in addition to the information displayed by the display surface 600A of the display device 600. The background light can also be observed by the display surface 600A of the display device 600. In this embodiment, the display device 600 further includes an electrochromic block 900, and the electrochromic block 900 is located in the non-transparent structure 140 and the second Between the substrates 120.

As shown in FIG. 11, the display device 600 includes a first substrate 110, a second substrate 120, a display element layer 130, a non-transmissive structure 140, and an insulating structure 170. In an embodiment, the display device 600 further includes a third substrate 390. The display element layer 130 and the non-transmissive structure 140 are formed on one surface 390a of the third substrate 390, and the insulating structure 170 is formed on the third substrate 390. On an opposite surface 390b. In another embodiment, the display device 600 can also optionally include a flat layer (not shown in FIG. 11), and does not include the third substrate 390; the flat layer is non-transparent as shown in FIG. 1A. The structure 140 is between the display element layer 130.

In this embodiment, the electrochromic block 900 can include a first transparent electrode 310, a conductive layer 280, a second transparent electrode 340, and an electrochromic medium 320. The second transparent electrode 340 is disposed on the second substrate 120. The chromotropic medium 320 can include a first layer of electrochromic material 330 and an electrolyte layer 360. As shown in FIG. 11 , the conductive layer 280 is connected to the first transparent electrode 310 , the first transparent electrode 310 covers at least one open region 150 , and the first electrochromic material layer 330 is disposed on the first transparent electrode 310 and the conductive layer 280 . . The electrolyte layer 360 is located between the first electrochromic material layer 330 and the second transparent electrode 340.

In this embodiment, the first transparent electrode 310 is electrically connected to the conductive layer 280 as an electrode. As shown in FIG. 11, the first transparent electrode 310 and the second transparent electrode 340 are electrically insulated from each other. In an embodiment, after the current is applied, the first electrochromic material layer 330 undergoes a chemical reaction on the first transparent electrode 310 to change color, and is changed to, for example, black, so that the background light image can be shielded, so that the display of the display device 600 is performed. Face 600A displays only the images that are intended to be presented.

In an embodiment, the first electrochromic material layer 330 can be combined with the foregoing The color-changing materials are the same, and may include, for example, a transition metal oxide, a Prussian blue, a viologen, a conducting polymer, a metallopolymer, and a metal phthalate. At least one of electrochromic materials of systems such as metal phthalocyanines. In an embodiment, the electrolyte layer 360 may include at least one of an aqueous solution of lithium ions, an aqueous solution of hydrogen ions, an aqueous solution of sodium ions, an aqueous solution of potassium ions, and a solution of a carbonate compound, and the solution of the carbonate compound may be, for example, propylene carbonate (propylene). Carbonate, ethylene carbonate, dimethyl carbonate or any combination of the above.

FIG. 12 is a display device according to still another embodiment of the present disclosure Schematic diagram of the profile of 700. The same components as those in the foregoing embodiments are denoted by the same reference numerals, and the related descriptions of the same components are referred to the foregoing, and are not described herein again.

As shown in FIG. 12, in this embodiment, the display device 700 is, for example, The transparent display device, that is, the background light from the back surface of the display device 700 and passing through the display device 700 can be observed by the display surface 700A of the display device 700 in addition to the information displayed by the display surface 700A of the display device 700. The main difference between the display device 700 of the present embodiment and the display device 600 of the foregoing embodiment is that the conductive layer 280 is transparent. As shown in FIG. 12, the conductive layer 280 is connected to the first transparent electrode 310 to form a full surface transparent electrode layer; in other words, the conductive layer 280 and the first transparent electrode 310 are actually fabricated through the same process. The integrally formed transparent electrode layer is, for example, a layer of indium tin oxide (ITO) layer, but is not limited thereto. In this embodiment, the conductive layer 280 and the first transparent electrode 310 are made of the same material, for example. Through the setting of the electrochromic block 900, the background light image can be shielded, so that the display device 700 is displayed. The display surface 700A displays only the images that are to be presented, and thus the contrast of the display images of the transparent display device can be improved.

FIG. 13 is a display device according to still another embodiment of the present disclosure A schematic view of the profile of 1000. The same components as those in the foregoing embodiments are denoted by the same reference numerals, and the related descriptions of the same components are referred to the foregoing, and are not described herein again.

As shown in FIG. 13, in this embodiment, the display device 1000 is, for example, It is a transparent display device, that is, the background light from the back surface of the display device 1000 and passing through the display device 1000 can be observed by the display surface 1000A of the display device 1000 in addition to the information displayed on the display surface 1000A of the display device 1000. The main difference between the display device 1000 of the present embodiment and the display device 700 of the foregoing embodiment is that the first transparent electrode 310 is further disposed on the conductive layer 280. As shown in FIG. 13 , the first transparent electrode 310 is a full-surface transparent electrode layer, and the first transparent electrode 310 covers the opening 150 and the conductive layer 280 , so that the process of patterning the first transparent electrode is not required, and the method is simplified. The advantages of the process. Furthermore, the first electrochromic material layer 330 is formed on the first transparent electrode 310-, and a portion of the first transparent electrode 310 is formed on the conductive layer 280. In the embodiment, the conductive layer 280 is, for example, a conductive metal layer. The conductive layer 280 directly contacts the first transparent electrode 310 over a large area to achieve the effect of reducing the resistance of the electrode structure. The background light image can be shielded by the arrangement of the electrochromic block 900, so that the display surface 1000A of the display device 1000 displays only the image that is intended to be displayed, thereby improving the contrast of the display image of the transparent display device.

FIG. 14 is a display device according to still another embodiment of the present disclosure A schematic view of the section 1010. The components in the embodiment that are the same as the previous embodiments are labeled with the same components, and the related descriptions of the same components are referred to the foregoing, and no longer Narration.

As shown in FIG. 14, in this embodiment, the display device 1010 is, for example, It is a transparent display device, that is, the background light from the back surface of the display device 1010 and passing through the display device 1010 can be observed by the display surface 1010A of the display device 1010 in addition to the information displayed by the display surface 1010A of the display device 1010. The main difference between the display device 1010 of the present embodiment and the display device 600 of the foregoing embodiment is the design of the electrochromic medium 320.

As shown in FIG. 14, in the display device 1010, the electrochromic medium 320 The first electrochromic material layer 330, the electrolyte layer 360 and the second electrochromic material layer 350 are disposed, and the second electrochromic material layer 350 is disposed on the second transparent electrode 340. The electrolyte layer 360 is located between the first electrochromic material layer 330 and the second electrochromic material layer 350. The background light image can be shielded by the arrangement of the electrochromic block 900, so that the display surface 1010A of the display device 1010 displays only the image that is intended to be displayed, thereby improving the contrast of the display image of the transparent display device.

As shown in FIG. 14, the first transparent electrode 310 and the second transparent electrode 340 are electrically insulated from each other. In an embodiment, after the current is applied, the first electrochromic material layer 330 undergoes a chemical reaction on the first transparent electrode 310 to change color, and the second electrochromic material layer 350 undergoes a chemical reaction on the second transparent electrode 340 to change color. The change is, for example, black, so that the background light image can be blocked such that the display surface 1010A of the display device 1010 displays only the image that is intended to be presented. The colors exhibited by the first electrochromic material layer 330 and the second electrochromic material layer 350 after the color change reaction may be, for example, mutually complementary colors.

In an embodiment, the second electrochromic material layer 350 may be the same as the foregoing first electrochromic material layer 330 and/or the aforementioned electrochromic material, for example, may be included Including transition metal oxide, Prussian blue, viologen, conducting polymer, metallopolymer, and metal phthalocyanines At least one of the electrochromic materials. In other words, the first electrochromic material layer 330 and the second electrochromic material layer 350 may have the same or different materials, and may each be selected from at least one of the above materials.

15 is a display device according to still another embodiment of the present disclosure Schematic diagram of the 1020 section. The same components as those in the foregoing embodiments are denoted by the same reference numerals, and the related descriptions of the same components are referred to the foregoing, and are not described herein again.

As shown in Fig. 15, in this embodiment, the display device 1020 is, for example It is a transparent display device, that is, the background light from the back surface of the display device 1020 and passing through the display device 1020 can be observed by the display surface 1020A of the display device 1020, in addition to the information displayed by the display surface 1020A of the display device 1020. The main difference between the display device 1020 of the present embodiment and the display device 1010 of the previous embodiment is that the conductive layer 280 is transparent. As shown in FIG. 15, the conductive layer 280 is connected to the first transparent electrode 310 to form a full surface transparent electrode layer; in other words, the conductive layer 280 and the first transparent electrode 310 are actually fabricated through the same process. An integrally formed transparent electrode layer. The backlight image can be shielded by the arrangement of the electrochromic block 900, so that the display surface 1020A of the display device 1020 displays only the image that is intended to be displayed, thereby improving the contrast of the display image of the transparent display device.

Figure 16 is a display device according to still another embodiment of the present disclosure. A schematic view of the section 1030. The components in the embodiment that are the same as the previous embodiments are labeled with the same components, and the related components are referred to the foregoing. Let me repeat.

As shown in FIG. 16, in this embodiment, the display device 1030 is, for example, It is a transparent display device, that is, the background light from the back surface of the display device 1030 and passing through the display device 1030 can be observed by the display surface 1030A of the display device 1030, in addition to the information displayed by the display surface 1030A of the display device 1030. The main difference between the display device 1030 of the present embodiment and the display device 1020 of the foregoing embodiment is that the first transparent electrode 310 is further disposed on the conductive layer 280. As shown in FIG. 16, the first transparent electrode 310 is a full-surface transparent electrode layer, and the first transparent electrode 310 covers the opening 150 and the conductive layer 280; in other words, the first electrochromic material layer 330 is formed in the first On the transparent electrode 310, a portion of the first transparent electrode 310 is formed on the conductive layer 280. The backlight image can be shielded by the arrangement of the electrochromic block 900, so that the display surface 1030A of the display device 1030 displays only the image that is intended to be displayed, thereby improving the contrast of the display image of the transparent display device.

In an embodiment, the materials of the first substrate 110 and the second substrate 120 The glass, plastic material or polymer material may be separately included, for example, polyimide, PI, hybrid PI, polyethylene terephthalate (PET), Polyethersulfone (PES), polyacrylate (PA), polyethylene naphthalatc (PEN), polycarbonate (PC), polynorbornene (PNB) ), polyetherimide (PEI), polyetheretherketone (PEEK), cycloolefin polymer (COP), polymethyl methacrylate (PMMA), glass fiber reinforced plastic Substrate (Fiberglass Reinforced Plastic Substrate) and the like. In the embodiment, as shown in FIG. 1A, the first substrate 110 or the second base The thickness T1 of the plate 120 is, for example, between 1 and 700 micrometers (μm); preferably between 5 and 30 micrometers.

In an embodiment, the material of the insulating structure 170 may be a positive photoresist, At least one of a negative photoresist, a thermosetting polymer, an ultraviolet curable polymer or other polymer material, the thickness H of the insulating structure 170 is, for example, between 5 micrometers and 300 micrometers. The material of the reflective layer 180 may be a metal such as aluminum, titanium, molybdenum, magnesium, lanthanum and silver, or a metal oxide or alloy thereof containing the metal, and the thickness T2 of the reflective layer 180 is, for example, between 50 nm and 1 μm. The material of the flat layer 190 may be a positive photoresist, a negative photoresist or other transparent polymer material, and the thickness T3 of the flat layer 190 is, for example, between 50 nm and 5 μm.

The display device in the above embodiment has a light guiding structure The ambient light on the back of the display can increase its transmittance due to the light guiding structure, further enhancing the user's viewing of the image behind the display; and having an electrochromic block, the background light image can be shielded and displayed The display surface of the device only displays the image that is intended to be displayed, thereby improving the contrast of the displayed image of the transparent display device.

The present disclosure has been disclosed in the above embodiments, but it is not intended to limit the disclosure, and any person skilled in the art can make some changes and refinements without departing from the spirit and scope of the disclosure. The scope of protection of this disclosure is subject to the definition of the scope of the appended claims.

100‧‧‧ display device

100A‧‧‧ display surface

110‧‧‧First substrate

120‧‧‧second substrate

130‧‧‧Display component layer

130a‧‧‧Display media layer

130b‧‧‧first electrode

130c‧‧‧second electrode

140‧‧‧Non-light transmission structure

150‧‧‧Open area

160‧‧‧Light guiding structure

170‧‧‧Insulation structure

180‧‧‧reflective layer

190‧‧‧flat layer

a, b, d‧‧‧ section length

H, T1, T2, T3‧‧‧ thickness

L‧‧‧ Ambient light

L’‧‧‧Out of light

S1‧‧‧ first surface

S2‧‧‧ second surface

S3‧‧‧ side surface

Θ1‧‧‧ angle

Claims (20)

A display device includes: a first substrate; a second substrate disposed opposite to the first substrate, wherein the first substrate is adjacent to a display surface of the display device; and a display element layer is disposed on the first substrate Between the second substrate; a non-transparent structure disposed between the display element layer and the second substrate, the non-transmissive structure having at least one opening corresponding to at least one open area of the display device, and the non-transparent The at least one opening of the optical structure exposes the at least one open area of the display device; a light guiding structure is disposed on the non-transmissive structure and corresponds to at least one open area, wherein the non-transmissive structure is located in the light guiding structure The light guiding structure further includes a plurality of insulating structures, each of the insulating structures having a first surface adjacent to the non-transmissive structure and a side surface connected to the first surface; and a reflective layer And disposed on the side surface, wherein an ambient light incident from the second substrate side is reflected by the reflective layer and exits through the open area. The display device of claim 1, wherein the insulating structure further comprises a second surface relative to the first surface, the second surface being coupled to the first surface via the side surface, the side surface being The angle of the extension of one of the second surfaces is greater than or equal to 50°. The display device of claim 1, wherein the insulating structure further comprises a second surface relative to the first surface, the first surface having an area greater than an area of the second surface. The display device of claim 1, wherein the side surfaces of the adjacent insulating structures are connected to each other, an extension wire extending from a top end of the insulating structure and having an extending direction parallel to the insulating structure The first surface, the side surface and the extension line are at an angle greater than or equal to 50°. The display device of claim 1, wherein the reflective layer comprises a metal oxide of aluminum metal, titanium metal, molybdenum metal, magnesium metal, base metal, silver metal, at least one of the metals, An alloy of at least one of the metals, or any combination thereof. The display device of claim 1, further comprising a flat layer disposed between the display element layer and the non-transmissive structure. The display device of claim 1, wherein the display element layer comprises a liquid crystal display element, an organic light emitting diode display element or an electrowetting display element. A display device includes: a first substrate; a second substrate disposed opposite to the first substrate, wherein the first substrate is adjacent to a display surface of the display device; and a display element layer is disposed on the first substrate Between the second substrate; a non-transparent structure disposed between the display element layer and the second substrate, the non-transparent structure defining at least one open area of the display device; and a plurality of insulating structures disposed on the non-transparent The light structure, wherein the non-transmissive structure is located between the insulating structures and the display element layer, each of the insulating structures having a first surface adjacent to the non-transmissive structure and a side surface connected to the first surface; An electrochromic block is disposed between the non-transmissive structure and the second substrate, and includes: a first transparent electrode disposed corresponding to at least one open region; and a conductive layer disposed on the insulating structure And the electrochromic medium adjacent to the first transparent electrode and the conductive layer. The display device of claim 8, wherein the electrochromic medium comprises an electrochromic material and an electrolyte. The display device of claim 9, wherein the electrochromic material comprises transition metal oxide, Prussian blue At least one of (Prussian blue), viologen, conducting polymer, metallopolymer, and metal phthalocyanines, the electrolyte layer including an aqueous lithium ion solution, hydrogen At least one of an ionic aqueous solution, an aqueous sodium ion solution, an aqueous potassium ion solution, propylene carbonate, ethylene carbonate, and dimethyl carbonate. The display device of claim 8, wherein the side surfaces are connected to each other. The display device of claim 8, wherein the first transparent electrode is located between the display element layer and the electrochromic medium or between the electrochromic medium and the second substrate. The display device of claim 8, wherein the conductive layer is connected to the first transparent electrode, and the electrochromic block further comprises a second transparent electrode disposed on the second substrate, wherein the electricity is The chromotropic medium comprises: a first electrochromic material layer disposed on the first transparent electrode and the conductive layer; and an electrolyte layer between the first electrochromic material layer and the second transparent electrode. The display device of claim 13, wherein the conductive layer and the first transparent electrode are of the same material. The display device of claim 13, wherein the first transparent electrode is further disposed on the conductive layer. The display device of claim 13, wherein the electrochromic medium further comprises: a second electrochromic material layer disposed on the second transparent electrode, wherein the electrolyte layer is located in the first electro-optical Between the color changing material layer and the second electrochromic material layer. The display device of claim 16, wherein the conductive layer is the same material as the first transparent electrode. The display device of claim 16, wherein the first transparent electrode is further disposed on the conductive layer. The display device of claim 13, wherein an angle between the second transparent electrode and the conductive layer is less than 180°. The display device of claim 8, wherein the first through The angle between the bright electrode and the conductive layer is less than 180°.