TWI786941B - Display apparatus - Google Patents

Abstract

A display apparatus includes a first substrate, a sub-pixel structure, a second substrate, a light-shielding pattern layer, a first insulating layer, a reflective layer and a second insulating layer. The sub-pixel structure is disposed on the first substrate. The light-shielding pattern layer is disposed on the second substrate and has an opening. The opening of the light-shielding pattern layer overlaps the sub-pixel structure. The first insulating layer is disposed on the light-shielding pattern layer and has an opening. The opening of the first insulating layer is disposed outside the opening of the light-shielding pattern layer. The first insulating layer has a sidewall defining the opening of the first insulating layer. The reflective layer is at least disposed on the sidewall of the first insulating layer. The second insulating layer is at least disposed in the opening of the first insulating layer and covers the reflective layer.

Description

display device

The present invention relates to an optoelectronic device, and more particularly to a display device.

According to the characteristics of the display medium, display devices are classified into non-self-luminous display devices and self-luminous display devices. The display panel of the non-self-luminous display device needs to be equipped with a backlight module to display. The self-luminous display device does not need to be equipped with a backlight module. Therefore, compared with non-self-luminous display devices, self-luminous display devices have the advantage of being thinner and lighter, and are more suitable for application in certain products, such as smart watches and smart phones.

Generally speaking, the opposite substrate of the self-luminous display device has a light-shielding pattern layer (or called a black matrix) to prevent light mixing between multiple sub-pixel structures for displaying different colors. However, while avoiding light mixing, the arrangement of the light-shielding pattern layer restricts the viewing angle of the self-luminous display device, and the brightness in the direction of large viewing angle is reduced.

In addition, taking an upward-emitting self-luminous display device as an example, the material of the common electrode of the pixel array substrate needs to use a light-transmitting conductive material. The conductivity of light-transmitting conductive materials is relatively low. When the size of the self-luminous display device is large, the difference in distance between each sub-pixel structure and the signal input end of the common electrode increases, resulting in a serious IR-drop problem and affecting display quality.

The invention provides a display device with good display quality.

The invention provides another display device with good display quality.

A display device according to an embodiment of the present invention includes a first substrate, at least one sub-pixel structure, a second substrate, a light-shielding pattern layer, a first insulating layer, a reflective layer and a second insulating layer. At least one sub-pixel structure is disposed on the first base. The second base is disposed opposite to the first base. The light-shielding pattern layer is disposed on the second base and has at least one opening. At least one opening of the light-shielding pattern layer overlaps at least one sub-pixel structure. The first insulating layer is disposed on the light-shielding pattern layer and has at least one opening. At least one opening of the first insulating layer is disposed outside the at least one opening of the light-shielding pattern layer. The first insulating layer has at least one sidewall defining at least one opening of the first insulating layer. The reflective layer is at least disposed on at least one side wall of the first insulating layer. The second insulating layer is at least disposed in at least one opening of the first insulating layer and covers the reflective layer.

In an embodiment of the present invention, the reflective layer has at least one first portion and at least one second portion connected to each other, the at least one first portion of the reflective layer is disposed on at least one side wall of the first insulating layer, and At least one second portion of the reflective layer is disposed between the light-shielding pattern layer and the second insulating layer.

In an embodiment of the present invention, at least a second portion of the reflective layer is in direct contact with the light-shielding pattern layer.

In an embodiment of the present invention, the above-mentioned reflective layer has at least one first portion and at least one second portion connected, at least one first portion of the reflective layer is disposed on at least one side wall of the first insulating layer, and the reflective layer At least one second portion of the at least one first portion is disposed on a side of the at least one first portion close to the light-shielding pattern layer, and the edge of the at least one second portion of the reflective layer is spaced a distance from the edge of the light-shielding pattern layer.

In an embodiment of the present invention, the above-mentioned second insulating layer has a first portion disposed in at least one opening of the first insulating layer, the first portion of the second insulating layer has a first surface facing the second substrate and The second surface facing at least one sidewall of the first insulating layer, and the first surface and the second surface form an angle α within the material of the second insulating layer, and α>90o.

In an embodiment of the present invention, the above-mentioned at least one sub-pixel structure includes a common electrode, the second insulating layer has at least one first portion disposed in at least one opening of the first insulating layer, and the display device further includes At least one protruding structure and the first conductive layer. At least one protruding structure is disposed on at least one first portion of the second insulating layer. The first conductive layer is disposed on at least one protruding structure, and is electrically connected to the reflective layer and the common electrode.

In an embodiment of the present invention, a part of the first conductive layer disposed on the at least one protruding structure is directly in contact with the common electrode.

In an embodiment of the present invention, the above-mentioned at least one sub-pixel structure further includes at least one first electrode, at least one light-emitting pattern, and a pixel definition layer. The pixel definition layer is disposed on the at least one first electrode and has Overlapping at least one opening of at least one first electrode, at least one light-emitting pattern is disposed in at least one opening of the pixel definition layer and electrically connected to the first electrode, the pixel definition layer has at least one depression, and the common electrode is disposed on the pixel definition layer The at least one recess of the pixel definition layer is electrically connected to at least one light-emitting pattern, and at least one protruding structure and at least a part of the first conductive layer are disposed in the at least one recess of the pixel definition layer.

In an embodiment of the present invention, the above display device further includes an encapsulation layer disposed on the common electrode, wherein a gap exists between the first insulating layer and the encapsulation layer.

In an embodiment of the present invention, the above display device further includes an encapsulation layer and an adhesive layer. The encapsulation layer is disposed on the common electrode. The adhesive layer is disposed between the first insulating layer and the packaging layer. At least one protruding structure protrudes from the adhesive layer.

In an embodiment of the present invention, the above-mentioned common electrode has a signal input end, and the arrangement density of at least one protruding structure at a place away from the signal input end is greater than that at another place close to the signal input end.

In an embodiment of the present invention, the above-mentioned display device further includes a second conductive layer disposed on the light-shielding pattern layer, between the light-shielding pattern layer and the first insulating layer, and has a structure overlapping at least one sub-pixel. At least one opening. The second conductive layer, the reflective layer, the first conductive layer and the common electrode are electrically connected to each other.

In an embodiment of the present invention, the shape of the above-mentioned vertical projection of the second conductive layer on the second substrate is substantially the same as the shape of the vertical projection of the light-shielding pattern layer on the second substrate.

In an embodiment of the present invention, the above-mentioned at least one sub-pixel structure includes a plurality of first light-emitting patterns electrically connected to the common electrode, at least one opening in the light-shielding pattern layer is a plurality of openings in the light-shielding pattern layer, and a plurality of The first light-emitting patterns are electrically connected to each other and respectively overlap the openings of the light-shielding pattern layer. The display device further includes an encapsulation layer and an adhesive layer. The encapsulation layer is disposed on at least one sub-pixel structure. The adhesive layer is disposed between the first insulating layer and the packaging layer. A gap exists between the first insulating layer and the encapsulation layer and overlaps one of the plurality of first light-emitting patterns, and the adhesive layer overlaps the other of the plurality of first light-emitting patterns.

In an embodiment of the present invention, the above-mentioned common electrode has a signal input end, and the arrangement density of the gaps at a place away from the signal input end is greater than that at another place close to the signal input end.

In an embodiment of the present invention, the above-mentioned at least one sub-pixel structure includes a first sub-pixel structure and a second sub-pixel structure, and the first sub-pixel structure and the second sub-pixel structure respectively include a first light-emitting pattern and a second light-emitting pattern, at least one opening of the first insulating layer includes a first opening and a second opening respectively corresponding to the first light-emitting pattern and the second light-emitting pattern, at least one side wall of the first insulating layer includes respectively defining the first insulating The first opening of the layer and the first side wall and the second side wall of the second opening, the reflective layer includes a plurality of first refractive index sub-layers and a plurality of second refractive index sub-layers stacked alternately, and the plurality of first refractive index sub-layers and a plurality of second refractive index sub-layers are disposed on the first sidewall and the second sidewall.

In an embodiment of the present invention, the above-mentioned at least one sub-pixel structure includes a first sub-pixel structure and a second sub-pixel structure, and the first sub-pixel structure and the second sub-pixel structure respectively include a first light-emitting pattern and the second light-emitting pattern, at least one opening of the first insulating layer includes a first opening and a second opening respectively corresponding to the first sub-pixel structure and the second sub-pixel structure, and at least one side wall of the first insulating layer includes The first sidewall and the second sidewall of the first opening and the second opening of the first insulating layer are respectively defined. The reflective layer includes a plurality of first refractive index sub-layers and a plurality of second refractive index sub-layers, stacked alternately and arranged on the first sidewall. The reflective layer further includes a plurality of third refractive index sub-layers and a plurality of fourth refractive index sub-layers stacked alternately and disposed on the second sidewall.

In an embodiment of the present invention, the above-mentioned first light-emitting pattern and second light-emitting pattern are used to emit the first color light and the second color light respectively, and the plurality of first refractive index sub-layers and the plurality of second refractive index sub-layers The reflectivity to the first color light is higher than the reflectivity to the second color light.

A display device according to an embodiment of the present invention includes a first substrate, a sub-pixel structure, a second substrate, a light-shielding pattern layer, protrusions, a reflective layer and a first insulating layer. The sub-pixel structure is disposed on the first base. The second base is disposed opposite to the first base. The light-shielding pattern layer is disposed on the second base and has an opening overlapping the sub-pixel structure. The protrusion is disposed on the light-shielding pattern layer and protrudes from the second base to the first base, wherein the protrusion has a side wall adjacent to the opening of the light-shielding pattern layer. The reflective layer is at least disposed on the sidewall of the protruding structure. The first insulating layer covers the reflective layer and overlaps the opening of the light-shielding pattern layer.

In an embodiment of the present invention, the above-mentioned protrusion has a first surface facing the second base, the side wall of the protrusion faces the first insulating layer, and the first surface and the side wall form an angle within the material of the protrusion. β, and β≤90o.

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and descriptions to refer to the same or like parts.

It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connection. Furthermore, "electrically connected" or "coupled" may mean that other elements exist between two elements.

As used herein, "about," "approximately," or "substantially" includes stated values and averages within acceptable deviations from a particular value as determined by one of ordinary skill in the art, taking into account the measurements in question and the relative A specific amount of measurement-related error (ie, the limit of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Moreover, "about", "approximately" or "substantially" used herein may select a more acceptable deviation range or standard deviation according to optical properties, etching properties or other properties, and may not use one standard deviation to apply to all properties .

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

FIG. 1 is a schematic cross-sectional view of a display device 10 according to an embodiment of the present invention.

FIG. 2 is a schematic top view of a display device 10 according to an embodiment of the present invention.

Fig. 1 corresponds to the section line I-I' of Fig. 2 . FIG. 2 shows the light-shielding pattern layer 220 , the plurality of light-emitting patterns 150 and the adhesive layer 270 of the display device 10 , while omitting other components of the display device 10 .

Referring to FIG. 1 , the display device 10 includes a pixel array substrate 100 and an opposite substrate 200 disposed opposite to each other. The pixel array substrate 100 includes a first base 110 . For example, in this embodiment, the material of the first substrate 110 can be glass, quartz, organic polymer, or opaque/reflective material (for example: wafer, ceramic, or other applicable materials), or other suitable materials.

The pixel array substrate 100 further includes a plurality of sub-pixel structures SPX disposed on the first substrate 110 . Each sub-pixel structure SPX includes at least one first electrode 130, a common electrode 160 and at least one light-emitting pattern 150, wherein at least one first electrode 130 and the common electrode 160 are electrically connected to at least one light-emitting pattern 150, and at least A light emitting pattern 150 is used to emit light beams L. Referring to FIG.

In this embodiment, each sub-pixel structure SPX further includes a sub-pixel circuit 120 electrically connected to at least one first electrode 130 . For example, in this embodiment, the sub-pixel circuit 120 may include a data line (not shown), a scan line (not shown), a power line (not shown), a first transistor (not shown) , a second transistor (not shown) and a capacitor (not shown), wherein the first end of the first transistor is electrically connected to the data line, the control end of the first transistor is electrically connected to the scan line, and the first The second terminal of the transistor is electrically connected to the control terminal of the second transistor, the first terminal of the second transistor is electrically connected to the power line, and the capacitor is electrically connected to the second terminal of the first transistor and the second terminal. The first end of the crystal, and the second end of the second transistor are electrically connected to at least one first electrode 130 . However, the present invention is not limited thereto, and in other embodiments, the sub-pixel circuit 120 may also be other types of circuits.

In addition, in this embodiment, each sub-pixel structure SPX further optionally includes a pixel definition layer 140 . The pixel definition layer 140 has at least one opening 140 a overlapping at least one first electrode 130 . At least one light emitting pattern 150 can be disposed in at least one opening 140 a of the pixel definition layer 140 . For example, in this embodiment, the material of the light emitting pattern 150 is, for example, an organic light emitting material, and the display device 10 may be an organic electroluminescence display. However, the present invention is not limited thereto. In other embodiments, the material of the light-emitting pattern 150 can also be an inorganic light-emitting material, and the display device 10 can also be an inorganic electroluminescent display, such as but not limited to: micro light-emitting diodes ( μLED) display.

In this embodiment, the common electrode 160 is a light-transmitting electrode, which includes metal oxides, such as: indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, or other A suitable oxide, or a stacked layer of at least two of the above, but the present invention is not limited thereto.

Please refer to FIG. 1 and FIG. 2. In this embodiment, the plurality of sub-pixel structures SPX may include first sub-pixel structures SPX1, SPX1, The second sub-pixel structure SPX2 and the third sub-pixel structure SPX3. The adjacent first sub-pixel structure SPX1, second sub-pixel structure SPX2 and third sub-pixel structure SPX3 can form a pixel structure PX. For example, in this embodiment, the first color light L1 , the second color light L2 and the third color light L3 are red light beams, green light beams and blue light beams respectively, but the invention is not limited thereto.

Please refer to FIG. 1 , in this embodiment, the pixel array substrate 100 further includes an encapsulation layer 170 disposed on the common electrode 160 of the sub-pixel structure SPX. For example, in this embodiment, the encapsulation layer 170 may be a high molecular polymer with an encapsulation film (Thin Film Encapsulation, TFE), but the invention is not limited thereto.

The opposite substrate 200 includes a second base 210 disposed opposite to the first base 110 . For example, in this embodiment, the material of the second substrate 210 may be glass, quartz, organic polymer, or other applicable materials.

The opposite substrate 200 further includes a light-shielding pattern layer 220 . The light-shielding pattern layer 220 can also be called a black matrix (black matrix, BM). The light-shielding pattern layer 220 is disposed on the second base 210 and has an opening 220a. The opening 220 a of the light-shielding pattern layer 220 overlaps the sub-pixel structure SPX. In detail, the opening 220 a of the light-shielding pattern layer 220 overlaps the light emitting pattern 150 of the sub-pixel structure SPX.

In this embodiment, the opposite substrate 200 may optionally include a plurality of color The color filter pattern 230 is disposed on the second substrate 210 and overlaps the opening 220 a of the light-shielding pattern layer 220 . In this embodiment, the plurality of color filter patterns 230 may include the first light-emitting pattern 150R disposed in the first sub-pixel structure SPX1, the second light-emitting pattern 150G and the third sub-pixel structure SPX2 respectively. The first color filter pattern 230R, the second color filter pattern 230G and the third color filter pattern 230B above the third light emitting pattern 150B of the pixel structure SPX3. For example, in this embodiment, the first color filter pattern 230R, the second color filter pattern 230G, and the third color filter pattern 230B can be red filter patterns, green filter patterns, and blue filter patterns, respectively. pattern, but the present invention is not limited thereto.

The opposite substrate 200 further includes a first insulating layer 240 disposed on the light-shielding pattern layer 220 and having an opening 240a. The opening 240 a of the first insulating layer 240 is disposed outside the opening 220 a of the light-shielding pattern layer 220 . The opening 240 a of the first insulating layer 240 is overlapped with the body of the light-shielding pattern layer 220 . The first insulating layer 240 has a sidewall 242 defining an opening 240a.

The opposite substrate 200 further includes a reflective layer 250 disposed at least on the sidewall 242 of the opening 240 a defining the first insulating layer 240 . In detail, in this embodiment, the reflective layer 250 has a connected first portion 251 and a second portion 252 . The first portion 251 of the reflective layer 250 is disposed on the sidewall 242 of the first insulating layer 240 . The second portion 252 of the reflective layer 250 is disposed between the light-shielding pattern layer 220 and (the first portion 261 of) the second insulating layer 260 . In short, the reflective layer 250 is conformally disposed in the opening 240 a of the first insulating layer 240 . In addition, in this embodiment, the second portion 252 of the reflective layer 250 may directly contact the light-shielding pattern layer 220 , but the invention is not limited thereto.

In this embodiment, the edge 252e of the second portion 252 of the reflective layer 250 is separated by a distance D from the edge 220e of the light-shielding pattern layer 220 . The vertical projection of the reflective layer 250 on the second substrate 210 does not exceed the vertical projection of the light-shielding pattern layer 220 on the second substrate 210 . In other words, the reflective layer 250 is disposed under the light-shielding pattern layer 220 and is not exposed to the light-shielding pattern layer 220 . In this embodiment, the material of the reflective layer 250 is, for example, metal, but the present invention is not limited thereto.

In this embodiment, the opposite substrate 200 further includes a second insulating layer 260 disposed at least in the opening 240 a of the first insulating layer 240 and covering the reflective layer 250 . In this embodiment, the second insulating layer 260 has a first portion 261 disposed in the opening 240 a of the first insulating layer 240 , and the first portion 261 of the second insulating layer 260 has a first surface 261 a facing the second substrate 210 and the second surface 261b facing the sidewall 242 of the first insulating layer 240 , the first surface 261a and the second surface 261b form an angle α within the material of the second insulating layer 260 , and α>90o. In this embodiment, the second insulating layer 260 can optionally have a second portion 262 disposed on the first insulating layer 240 and overlapping the opening 220 a of the light-shielding pattern layer 220 .

In this embodiment, the opposite substrate 200 further includes an adhesive layer (filler) 270 disposed between the first insulating layer 240 and the encapsulation layer 170 . The opposite substrate 200 and the pixel array substrate 100 are connected to each other through the adhesive layer 270 . The reflective layer 250 is located between the first insulating layer 240 and the second insulating layer 260 . The second insulating layer 260 is located between the reflective layer 250 and the adhesive layer 270 . The adhesive layer 270 is located between the second insulating layer 260 and the encapsulation layer 170 .

It is worth mentioning that the light beam L having a large divergence angle φ and passing to the light-shielding pattern layer 220 cannot exit from the inside of the display device 10, but through the reflection of the reflective layer 250, the light beam L can be guided by the reflective layer 250 to the light-shielding pattern layer 220. The opening 220a of the pattern layer 220 is emitted at a large angle θ. Thereby, the brightness of the display device 10 in the direction of large viewing angle can be increased.

It must be noted here that the following embodiments use the component numbers and part of the content of the previous embodiments, wherein the same numbers are used to denote the same or similar components, and descriptions of the same technical content are omitted. For the description of omitted parts, reference may be made to the aforementioned embodiments, and the following embodiments will not be repeated.

FIG. 3 is a schematic cross-sectional view of a display device 10A according to an embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of a display device 10A according to an embodiment of the present invention.

FIG. 5 is a schematic top view of a display device 10A according to an embodiment of the present invention.

Fig. 3 corresponds to the section line II-II' of Fig. 5 . Fig. 4 corresponds to section line III-III' of Fig. 5 . FIG. 5 shows the light-shielding pattern layer 220 , the second conductive layer 280 , the protrusion structure 290 , the plurality of light emitting patterns 150 and the adhesive layer 270 of the display device 10A, while omitting other components of the display device 10A.

The display device 10A in FIG. 3 , FIG. 4 and FIG. 5 is similar to the display device 10 in FIG. 1 and FIG. 2 , and the main difference between the two is that the display device 10A in FIG. 3 , FIG. 4 and FIG. 5 further includes: a second conductive layer 280 , a protruding structure 290 and a first conductive layer 292 .

Referring to FIG. 3 , FIG. 4 and FIG. 5 , the opposite substrate 200 further includes a protruding structure 290 and a first conductive layer 292 . The protruding structure 290 is disposed on the first portion 261 of the second insulating layer 260 and protrudes toward the pixel array substrate 100 . The first conductive layer 292 is disposed on the protruding structure 290 and is electrically connected to the reflective layer 250 and the common electrode 160 . In other words, part of the first conductive layer 292 on the protruding structure 290 is used as a bridging element between the reflective layer 250 of the opposite substrate 200 and the common electrode 160 of the pixel array substrate 100 . In this embodiment, a portion of the first conductive layer 292 disposed on the protruding structure 290 may directly contact the common electrode 160 , but the invention is not limited thereto.

3 and 4, in this embodiment, the pixel definition layer 140 may have a recess 142a, the common electrode 160 is disposed in the recess 142a of the pixel definition layer 140 and electrically connected to the light emitting pattern 150, opposite to the substrate The protruding structure 290 of 200 and part of the first conductive layer 292 disposed on the protruding structure 290 are disposed in the recess 142a. The depression 142a of the pixel definition layer 140 helps the raised structure 290 of the opposing substrate 200 and part of the first conductive layer 292 disposed on the raised structure 290 to be stably disposed on the pixel array substrate 100, so as to provide a good electrical connection. The reflective layer 250 of the opposite substrate 200 is connected with the common electrode 160 of the pixel array substrate 100 .

For example, in this embodiment, the pixel definition layer 140 may include a first sub-pixel definition layer 141 and a second sub-pixel definition layer 142 disposed on the first sub-pixel definition layer 141, the first sub-pixel definition layer The pixel definition layer 141 and the second sub-pixel definition layer 142 jointly define the opening 140a overlapping the first electrode 130, and the second sub-pixel definition layer 142 has a recess 142a overlapping the protruding structure 290, but the present invention does not This is the limit.

It is worth mentioning that, in this embodiment, the common electrode 160 is light-transmissive, and the resistivity of the material that can be selected for the light-transmissive common electrode 160 is relatively high, but through the part of the first conductive layer disposed on the protruding structure 290 292 , the common electrode 160 with relatively high resistivity can be electrically connected with the reflective layer 250 with low resistivity. Thereby, the resistance value of the composite common electrode C including the common electrode 160 and the reflective layer 250 can be reduced, which helps to improve the voltage drop (IR-drop) problem caused by the high resistance value of the common electrode 160, and further Improve display quality.

3 and 5, in this embodiment, the opposite substrate 200 further includes a second conductive layer 280 disposed on the light-shielding pattern layer 220, between the light-shielding pattern layer 220 and the first insulating layer 240, and has Overlapping the opening 280a of the sub-pixel structure SPX. In this embodiment, the shape of the vertical projection of the second conductive layer 280 on the second substrate 210 and the shape of the vertical projection of the light-shielding pattern layer 220 on the second substrate 210 may optionally be substantially the same. For example, in this embodiment, the vertical projection of the second conductive layer 280 on the second substrate 210 and the vertical projection of the light-shielding pattern layer 220 on the second substrate 210 can both be mesh patterns, but the present invention does not rely on This is the limit.

Referring to FIG. 3 , in this embodiment, the reflective layer 250 can be electrically connected to the second conductive layer 280 through the opening 240 a of the first insulating layer 240 . In this embodiment, the second conductive layer 280 , the reflective layer 250 , the first conductive layer 292 and the common electrode 160 are electrically connected to each other to form a composite common electrode C. In this embodiment, in addition to the reflective layer 250 , the resistivity of the second conductive layer 280 is also smaller than that of the common electrode 160 . Through the second conductive layer 280 electrically connected to the common electrode 160 , the resistance value of the composite common electrode C can be further reduced, and the IR-drop problem can be significantly improved.

Please refer to FIG. 3 , FIG. 4 and FIG. 5 . In order to connect, the adhesive layer 270 may not be disposed in some areas of the display device 10 . That is to say, in some regions, there may be an air gap AG between the first insulating layer 240 of the opposite substrate 200 and the encapsulation layer 170 of the pixel array substrate 100 . In addition, in another part of the area, an adhesive layer 270 can still be provided between the first insulating layer 240 of the opposite substrate 200 and the encapsulation layer 170 of the pixel array substrate 100, so as to maintain the relationship between the pixel array substrate 100 and the opposite substrate 200. Connection.

For example, in this embodiment, the same sub-pixel structure SPX may include multiple light-emitting patterns 150, and the multiple light-emitting patterns 150 of the same sub-pixel structure SPX respectively overlap the multiple openings 220a of the light-shielding pattern layer 220, and the same The multiple light emitting patterns 150 of the sub-pixel structure SPX are electrically connected to each other, and the multiple light emitting patterns 150 of the same sub-pixel structure SPX are electrically connected to the same sub-pixel circuit 120, wherein one light emitting pattern 150 overlaps the adhesive layer 270, And another light emitting pattern 150 overlaps the gap AG.

The setting of the adhesive layer 270 can reduce the reflection of the light beam L (please refer to FIG. 1 ) emitted by the light emitting pattern 150 at the interface inside the display device 10A, and increase the light extraction efficiency of the sub-pixel structure SPX. The gap AG can make the portion of the first conductive layer 292 on the protruding structure 290 of the opposite substrate 200 electrically connected to the common electrode 160 of the pixel array substrate 100 without being hindered by the adhesive layer 270 . Adhesive layers 270 and gaps AG are respectively provided on multiple light-emitting patterns 150 of the same sub-pixel structure SPX, so that multiple sub-pixel structures SPX have the same or similar light-emitting effects, and take into account the reflective layer 250 (and/or the second The conductive layer 280 ) is electrically connected to the common electrode 160 . However, the present invention is not limited thereto, and in other embodiments, the gap AG and the adhesive layer 270 may also be configured in other ways. In addition, the present invention does not limit the ratio of the area of the same sub-pixel structure SPX overlapping the gap AG to the area overlapping the adhesive layer 270, and the area of the same sub-pixel structure SPX overlapping the gap AG The proportion of the area can be adjusted according to actual needs.

Please refer to FIG. 3 , FIG. 4 and FIG. 5 , for example, the common electrode 160 has a signal input terminal OVSS. In this embodiment, the arrangement density of the protruding structures 290 at a place away from the signal input terminal OVSS may be selectively greater than that at another place close to the signal input terminal OVSS. In this embodiment, the arrangement density of the gaps AG at a place away from the signal input terminal OVSS can be selectively greater than that at another place close to the signal input terminal OVSS. That is to say, the density of the electrical connections between the first conductive layer 292 of the opposite substrate 200 and the common electrode 160 of the pixel array substrate 100 can The higher the value, the better the effect of improving the voltage drop (IR-drop).

Referring to FIG. 3 , in this embodiment, a portion of the first conductive layer 292 disposed on the protruding structure 290 next to the adhesive layer 270 can still be electrically connected to the common electrode 160 . In this embodiment, the protruding structure 290 can protrude from the adhesive layer 270 , so that part of the first conductive layer 292 on the protruding structure 290 is electrically connected to the common electrode 160 . However, the present invention is not limited thereto, and in other embodiments, the adhesive layer 270 may also cover the protruding structure 290 .

FIG. 6 is a schematic top view of a display device 10B according to an embodiment of the present invention.

6 shows the light-shielding pattern layer 220 , the second conductive layer 280 , the protrusion structure 290 , the plurality of light emitting patterns 150 and the adhesive layer 270 of the display device 10B, while omitting other components of the display device 10B.

The display device 10B in FIG. 6 is similar to the display device 10A in FIG. 5 , the difference between them is that the formation position of the adhesive layer 270 is slightly different. Referring to FIG. 5 and FIG. 6 , the adhesive layer 270 may include a plurality of adhesive patterns 272 . In the embodiment of FIG. 5 , the pitch P of the sprayed adhesive pattern 272 is approximately equal to the width W of one pixel structure PX. In the embodiment of FIG. 6 , the pitch P of the sprayed adhesive pattern 272 is approximately equal to the width W of n pixel structures PX, where n is a positive integer greater than or equal to 2. 6 is an example where n=2 (that is, the pitch P of the adhesive pattern 272 is approximately equal to the width W of two pixel structures PX), but the present invention is not limited thereto.

FIG. 7 is a schematic cross-sectional view of a display device 10C according to an embodiment of the present invention.

FIG. 8 is a schematic cross-sectional view of a display device 10C according to an embodiment of the present invention.

FIG. 9 is a schematic top view of a display device 10C according to an embodiment of the present invention.

Fig. 7 corresponds to section line IV-IV' of Fig. 9 . Fig. 8 corresponds to the section line V-V' of Fig. 9 . FIG. 9 shows the light-shielding pattern layer 220, the second conductive layer 280, the protrusion structure 290, the plurality of light emitting patterns 150 and the adhesive layer 270 of the display device 10C shown in FIG. 7 and FIG. 8, and the display device shown in FIG. 7 and FIG. 8 is omitted. Other components of 10C.

The display device 10C shown in FIGS. 7 , 8 and 9 is similar to the display device 10A shown in FIGS. 3 , 4 and 5 . The difference between them is that the reflective layer 250C of the display device 10C is different from the reflective layer 250 of the display device 10A.

Please refer to FIG. 7, FIG. 8 and FIG. 9. In this embodiment, the multiple sub-pixel structures SPX include a first sub-pixel structure SPX1, a second sub-pixel structure SPX2, and a third sub-pixel structure SPX3. The sub-pixel structure SPX1, the second sub-pixel structure SPX2, and the third sub-pixel structure SPX3 respectively include a first light emitting pattern 150R, a second light emitting pattern 150G, and a third light emitting pattern 150B, and the opening 220a of the first insulating layer 240 includes Corresponding to the first opening 220a-1, the second opening 220a-2 and the third opening 220a-3 of the first sub-pixel structure SPX1, the second sub-pixel structure SPX2 and the third sub-pixel structure SPX3 respectively, the first The sidewall 242 of the insulating layer 240 includes a first sidewall 242-1, a second sidewall 242-2 and a third sidewall 242-3 respectively defining the first opening 220a-1, the second opening 220a-2 and the third opening 220a-3. .

In this embodiment, the reflective layer 250C includes a plurality of first refractive index sub-layers 250a and a plurality of second refractive index sub-layers 250b, which are alternately stacked and disposed on the first sidewall 242-1. The refractive index of the plurality of first refractive index sublayers 250a is different from the refractive index of the plurality of second refractive index sublayers 250b. A plurality of first refractive index sub-layers 250a and a plurality of second refractive index sub-layers 250b stacked alternately can form a first distributed Bragg reflector DBR1. The first distributed Bragg reflector DBR1 is used to reflect the first color light L1 emitted by the first sub-pixel structure SPX1.

In this embodiment, the reflective layer 250C further includes a plurality of third refractive index sub-layers 250c and a plurality of fourth refractive index sub-layers 250d, which are alternately stacked and disposed on the second sidewall 242-2. A refractive index of the plurality of third refractive index sublayers 250c is different from a refractive index of the plurality of fourth refractive index sublayers 250d. A plurality of third refractive index sub-layers 250c and a plurality of fourth refractive index sub-layers 250d stacked alternately can form a second distributed Bragg reflector DBR2. The second distributed Bragg reflector DBR2 is used for reflecting the second color light L2 emitted by the second sub-pixel structure SPX2.

In this embodiment, the reflective layer 250C further includes a plurality of fifth refractive index sub-layers 250e and a plurality of sixth refractive index sub-layers 250f, which are alternately stacked and disposed on the third sidewall 242-3. The plurality of fifth refractive index sublayers 250e has a different refractive index from the plurality of sixth refractive index sublayers 250f. A plurality of fifth refractive index sub-layers 250e and a plurality of sixth refractive index sub-layers 250f stacked alternately can form a third distributed Bragg reflector DBR3. The third distributed Bragg reflector DBR3 is used for reflecting the third color light L3 emitted by the third sub-pixel structure SPX3.

In this embodiment, the first refractive index sublayer 250a and the plurality of second refractive index sublayers 250b (that is, the first distributed Bragg reflector DBR1) have a higher reflectivity for the first color light L1 than for the second color light Reflectivity of L2. In this embodiment, the multiple third refractive index sub-layers 250c and the multiple fourth refractive index sub-layers 250d (that is, the second distributed Bragg reflector DBR2) have higher reflectivity for the second color light L2 than for the first The reflectivity of the shade L1. In this embodiment, the multiple fifth refractive index sub-layers 250e and multiple sixth refractive index sub-layers 250f (that is, the third distributed Bragg reflector DBR3) have a higher reflectivity for the third color light L3 than for the second color light L3. Reflectance of shade L2.

In this embodiment, by adjusting the first refractive index sub-layer 250a, the second refractive index sub-layer 250b, the third refractive index sub-layer 250c, the fourth refractive index sub-layer 250d, the fifth refractive index sub-layer 250e and/or The refractive index and/or thickness of the sixth refractive index sub-layer 250f can increase the reflectivity of the reflective layer 250C for the first color light L1 , the second color light L2 and the third color light L3 of different wavelengths.

In this embodiment, the first refractive index sub-layer 250a, the second refractive index sub-layer 250b, the third refractive index sub-layer 250c, the fourth refractive index sub-layer 250d, the fifth refractive index sub-layer 250e and the sixth refractive index The material of the sub-layer 250f is conductive. For example, the first refractive index sub-layer 250a, the second refractive index sub-layer 250b, the third refractive index sub-layer 250c, the fourth refractive index sub-layer 250d, the fifth refractive index sub-layer 250e and the sixth refractive index sub-layer The material of 250f may include metal oxide, but the invention is not limited thereto.

FIG. 10 is a schematic cross-sectional view of a display device 10D according to an embodiment of the present invention. The display device 10D shown in FIG. 10 is similar to the display device 10C shown in FIG. 7 . The difference between them is that in the embodiment shown in FIG. Corresponding to the first sidewall 242-1, the second sidewall 242-2 and the third sidewall 242-3 of the first sub-pixel structure SPX1, the second sub-pixel structure SPX2 and the third sub-pixel structure SPX3 respectively. In other words, in this embodiment, the first sub-pixel structure SPX1, the second sub-pixel structure SPX2 and the third sub-pixel structure SPX3 share the same first distributed Bragg reflector DBR1, and the pair of the display device 10D The manufacturing process of the opposing substrate 200 is simpler than that of the opposing substrate 200 of the display device 10C.

FIG. 11 is a schematic cross-sectional view of a display device 10E according to an embodiment of the present invention. The display device 10E of FIG. 11 is similar to the display device 10 of FIG. 1 , the difference between them is that the opposite substrate 200E of the display device 10E of FIG. 11 is different from the opposite substrate 200 of the display device 10 of FIG. 1 .

Referring to FIG. 11 , specifically, in this embodiment, the opposite substrate 200E includes a second base 210 , a light-shielding pattern layer 220 , protrusions 294 , a reflective layer 250E, and a first insulating layer 240E. The light-shielding pattern layer 220 is disposed on the second substrate 210 and has an opening 220 a overlapping the sub-pixel structure SPX. The protrusion 294 is disposed on the light-shielding pattern layer 220 and protrudes from the second base 210 to the first base 110 . The protrusion 294 has a sidewall 294 a adjacent to the opening 220 a of the light-shielding pattern layer 220 . The reflective layer 250E is at least disposed on the sidewall 294 a of the protrusion 294 . The first insulating layer 240E covers the reflective layer 250E and overlaps the opening 220 a of the light-shielding pattern layer 220 . In this embodiment, the protrusion 294 has a first surface 294b facing the second base 210, the sidewall 294a of the protrusion 294 faces the first insulating layer 240E, and the material of the first surface 294b and the sidewall 294a is different from that of the protrusion 294. There is an angle β inside, and β<90o.

FIG. 12 is a schematic cross-sectional view of a display device 10F according to an embodiment of the present invention. The display device 10F shown in FIG. 12 is similar to the display device 10E shown in FIG. 11 . The difference between the two is that in the embodiment shown in FIG. β is substantially equal to 90o.

Similarly, the display device 10E of FIG. 11 and the display device 10F of FIG. 12 pass through the reflective layer 250E on the protrusion 294 to guide the light beam L having a large divergence angle φ and transmitted to the light-shielding pattern layer 220 to the light-shielding pattern layer 220 The opening 220a, and exit at a large angle θ. Thereby, the brightness of the display devices 10E, 10F can be increased in the direction of large viewing angle.

10, 10A, 10B, 10C, 10D, 10E, 10F: display device 100:Pixel array substrate 110: First base 120: Sub-pixel circuit 130: first electrode 140:Pixel definition layer 140a, 220a, 240a, 280a: openings 141: The first sub-pixel definition layer 142: The second sub-pixel definition layer 142a: Depression 150: Luminous pattern 150R: The first color filter pattern 150G: Second color filter pattern 150B: the third color filter pattern 160: common electrode 170: encapsulation layer 200: opposite substrate 210:Second Base 220: shading pattern layer 220e: edge 220a-1: first opening 220a-2: second opening 220a-3: the third opening 230: Color filter pattern 230R: The first color filter pattern 230G: Second color filter pattern 230B: the third color filter pattern 240, 240E: the first insulating layer 242, 294a: side wall 242-1: first side wall 242-2: second side wall 242-3: third side wall 250, 250C, 250E: reflective layer 250a: the first refractive index sublayer 250b: second refractive index sublayer 250c: the third refractive index sublayer 250d: the fourth refractive index sublayer 250e: the fifth refractive index sublayer 250f: sixth refractive index sublayer 251, 261: Part 1 252, 262: Part Two 252e: edge 260: second insulating layer 261a: first surface 261b: second surface 270: Adhesive layer 272: Adhesive pattern 280: second conductive layer 290: Convex structure 292: The first conductive layer 294: bumps 294b: first surface AG: Gap C: Composite common electrode D: distance DBR1: First Distributed Bragg Reflector DBR2: Second Distributed Bragg Reflector DBR3: Third Distributed Bragg Reflector L: light beam L1: first color light L2: second color light L3: third color light OVSS: signal input terminal PX: pixel structure P: Pitch SPX: sub-pixel structure SPX1: The first sub-pixel structure SPX2: Second sub-pixel structure SPX3: The third sub-pixel structure W: width α, β, θ: angle φ: divergence angle I-I', II-II', III-III', IV-IV', V-V': broken line

FIG. 1 is a schematic cross-sectional view of a display device 10 according to an embodiment of the present invention. FIG. 2 is a schematic top view of a display device 10 according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of a display device 10A according to an embodiment of the present invention. FIG. 4 is a schematic cross-sectional view of a display device 10A according to an embodiment of the present invention. FIG. 5 is a schematic top view of a display device 10A according to an embodiment of the present invention. FIG. 6 is a schematic top view of a display device 10B according to an embodiment of the present invention. FIG. 7 is a schematic cross-sectional view of a display device 10C according to an embodiment of the present invention. FIG. 8 is a schematic cross-sectional view of a display device 10C according to an embodiment of the present invention. FIG. 9 is a schematic top view of a display device 10C according to an embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of a display device 10D according to an embodiment of the present invention. FIG. 11 is a schematic cross-sectional view of a display device 10E according to an embodiment of the present invention. FIG. 12 is a schematic cross-sectional view of a display device 10F according to an embodiment of the present invention.

10: Display device

100:Pixel array substrate

110: First base

120: Sub-pixel circuit

130: first electrode

140:Pixel definition layer

140a, 220a, 240a: openings

150: Luminous pattern

150R: The first color filter pattern

150G: Second color filter pattern

150B: the third color filter pattern

160: common electrode

170: encapsulation layer

200: opposite substrate

210:Second Base

220: shading pattern layer

220e, 252e: edge

230: Color filter pattern

230R: The first color filter pattern

230G: Second color filter pattern

230B: the third color filter pattern

240: first insulating layer

242: side wall

250: reflective layer

251, 261: Part 1

252, 262: Part Two

260: second insulating layer

261a: first surface

261b: second surface

270: Adhesive layer

D: distance

L: light beam

L1: first color light

L2: second color light

L3: third color light

SPX: sub-pixel structure

SPX1: The first sub-pixel structure

SPX2: Second sub-pixel structure

SPX3: The third sub-pixel structure

α, θ: angle

φ: divergence angle

I-I': section line

Claims (17)

A display device, comprising: a first substrate; at least one sub-pixel structure disposed on the first substrate, wherein the at least one sub-pixel structure includes a common electrode; a second substrate disposed on the first substrate opposite to; a light-shielding pattern layer, disposed on the second substrate, and has at least one opening, wherein the at least one opening of the light-shielding pattern layer overlaps the at least one sub-pixel structure; a first insulating layer, set on the light-shielding pattern layer, and has at least one opening, wherein the at least one opening of the first insulating layer is disposed outside the at least one opening of the light-shielding pattern layer, and the first insulating layer has a at least one side wall of the at least one opening; a reflective layer disposed at least on the at least one side wall of the first insulating layer; a second insulating layer disposed at least in the at least one opening of the first insulating layer, and cover the reflective layer, wherein the second insulating layer has at least one first portion disposed in the at least one opening of the first insulating layer; at least one protruding structure is disposed in the at least one first portion of the second insulating layer and a first conductive layer disposed on the at least one protruding structure and electrically connected to the reflective layer and the common electrode. The display device as claimed in claim 1, wherein the reflective layer has at least one first part and at least one second part connected, and the at least one first part of the reflective layer A portion is disposed on the at least one sidewall of the first insulating layer, and the at least one second portion of the reflective layer is disposed between the light-shielding pattern layer and the second insulating layer. The display device according to claim 1, wherein the at least one second portion of the reflective layer is directly in contact with the light-shielding pattern layer. The display device according to claim 1, wherein the reflective layer has at least one first portion and at least one second portion connected to each other, and the at least one first portion of the reflective layer is disposed on the at least one portion of the first insulating layer. One side wall, the at least one second part of the reflective layer is disposed on the side of the at least one first part close to the light-shielding pattern layer, an edge of the at least one second part of the reflective layer is connected to the light-shielding pattern layer An edge is separated by a distance. The display device according to claim 1, wherein the second insulating layer has a first portion disposed in the at least one opening of the first insulating layer, and the first portion of the second insulating layer has a a first surface of two bases and a second surface facing the at least one side wall of the first insulating layer, and the first surface and the second surface form an angle α within the material of the second insulating layer, and α>90o. The display device according to claim 1, wherein the portion of the first conductive layer disposed on the at least one protruding structure directly contacts the common electrode. The display device according to claim 1, wherein the at least one sub-pixel structure further includes at least one first electrode, at least one light-emitting pattern, and a pixel definition layer, and the pixel definition layer is disposed on the at least one first electrode and has at least one opening overlapping the at least one first electrode, the at least one light-emitting pattern is disposed in the at least one opening of the pixel definition layer and electrically connected to the first electrode, and the pixel definition layer has At least one recess, the common electrode is disposed in the at least one recess of the pixel definition layer and electrically connected to the at least one light emitting pattern, and the at least one protruding structure and at least a part of the first conductive layer are disposed in the at least one recess In the at least one recess of the pixel definition layer. The display device according to claim 1, further comprising: an encapsulation layer disposed on the common electrode, wherein a gap exists between the first insulating layer and the encapsulation layer. The display device according to claim 1, further comprising: an encapsulation layer disposed on the common electrode; and an adhesive layer disposed between the first insulating layer and the encapsulation layer; wherein the at least one protrusion structure protrude from the adhesive layer. The display device according to claim 1, wherein the common electrode has a signal input end, and the arrangement density of the at least one protruding structure is greater at a place far from the signal input end than at another place close to the signal input end. The display device according to claim 1, further comprising: a second conductive layer disposed on the light-shielding pattern layer, between the light-shielding pattern layer and the first insulating layer, and having a At least one opening of the pixel structure; wherein, the second conductive layer, the reflective layer, the first conductive layer and the common electrode are electrically connected to each other. The display device according to claim 11, wherein a shape of a vertical projection of the second conductive layer on the second substrate is substantially the same as a shape of a vertical projection of the light-shielding pattern layer on the second substrate. The display device according to claim 1, wherein the at least one sub-pixel structure includes a plurality of first light-emitting patterns electrically connected to the common electrode, and the at least one opening of the light-shielding pattern layer is a plurality of the light-shielding pattern layer. The first light-emitting patterns are electrically connected to each other and respectively overlap the openings of the light-shielding pattern layer. The display device further includes: an encapsulation layer disposed on the at least one sub-pixel structure; and an adhesive layer, disposed between the first insulating layer and the encapsulation layer; wherein a gap exists between the first insulating layer and the encapsulation layer and overlaps one of the first light emitting patterns, and the adhesive layer overlaps on the other of the first light emitting patterns. The display device according to claim 13, wherein the common electrode has a signal input end, and the arrangement density of the gaps at a place far from the signal input end is greater than that at another place close to the signal input end. The display device as described in claim 1, wherein the at least one sub-pixel structure includes a first sub-pixel structure and a second sub-pixel structure, the first sub-pixel structure and the second sub-pixel structure respectively including a first light emitting pattern and a second light emitting pattern, the at least one opening of the first insulating layer includes a first opening and a second opening respectively corresponding to the first light emitting pattern and the second light emitting pattern, the The at least one sidewall of the first insulating layer includes a first sidewall and a second sidewall respectively defining the first opening and the second opening of the first insulating layer, and the reflective layer includes a plurality of alternately stacked first reflectors An index sublayer and a plurality of second index sublayers, the first index sublayers and the second index sublayers are disposed on the first sidewall and the second sidewall. The display device as described in claim 1, wherein the at least one sub-pixel structure includes a first sub-pixel structure and a second sub-pixel structure, the first sub-pixel structure and the second sub-pixel structure respectively including a first light-emitting pattern and a second light-emitting pattern, the at least one opening of the first insulating layer includes a first opening and a first opening respectively corresponding to the first sub-pixel structure and the second sub-pixel structure For the second opening, the at least one side wall of the first insulating layer includes a first side wall and a second side wall respectively defining the first opening and the second opening of the first insulating layer, and the reflective layer includes: a plurality of First refractive index sublayers and multiple second refractive index sublayers are alternately stacked and disposed on the first sidewall; and multiple third refractive index sublayers and multiple fourth refractive index sublayers are alternately stacked, And it is arranged on the second side wall. The display device according to claim 16, wherein the first light emitting pattern and a second light emitting pattern are used to emit a first color light and a second color light respectively, and the first refractive index sublayers and the second light emitting patterns are The reflectivity of the refractive index sublayer to the first color light is higher than the reflectivity to the second color light.

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