TW201527112A - Display device - Google Patents

Abstract

A display device includes a display panel and a cover substrate disposed on the top side of the display panel. The display panel includes a display substrate, a display element layer and a circuit control element. The display substrate has a display region and a periphery region at least positioned at a side of the display region. The display element layer is disposed on the upper surface of the display substrate in the display region. The circuit control element is disposed on the upper surface of the display substrate in the periphery region. The cover substrate has a transparent region and a border region defined thereon. The transparent region and the border region are corresponding to the display region and the periphery region of the display substrate respectively. The cover substrate has a containing space disposed in the border region. The containing space is corresponding to the circuit control element and used for containing at least a portion of the circuit control element.

Description

Display device

The present invention relates to a display device, and more particularly to a display device in which an accommodation space is provided on a surface of a cover plate.

With the development of technology, various display devices, especially display devices equipped with touch functions, have been widely used in various electronic products, such as smart phones, satellite navigation systems, tablet computers, personal digital assistants, and the like. In general, various electronic components or display components are disposed on the substrate of the display device. Since the thickness of these components is not the same, if the display device is combined or assembled with other devices, some thickness may be thick. The components (for example, having a drive wafer of 0.2 to 0.3 mm thick) cause the display device to be unable to be assembled smoothly with other devices, or a thick gap must be left between the display device and other devices, limiting the possibility of lightening and thinning the product. .

One of the main objects of the present invention is to provide a display device including a display panel and a cover plate, and the cover plate has an accommodating space in a recessed structure for accommodating components of the surface of the display panel, thereby reducing the overall display device. thickness of.

According to an embodiment of the invention, a display device includes a display panel and a cover. The display panel includes a display substrate, a display element layer and a circuit control element. The display substrate has a display area and a peripheral circuit area, wherein the peripheral circuit area is located on at least one side of the display area. The display element layer is disposed on the upper surface of the display substrate and located in the display area. The circuit control component is disposed on the upper surface of the display substrate and located in the peripheral circuit region. The surface of the cover plate defines a light transmissive area and a peripheral area, wherein the light transmissive area corresponds to the display area of the display substrate, and the peripheral area corresponds to the peripheral circuit area of the display substrate. a cover plate is disposed on the display panel toward one side of the circuit control component, and the cover plate An accommodating space is disposed in the peripheral area, and the accommodating space corresponds to the circuit control component and is used for accommodating the circuit control component.

According to the present invention, since the accommodating space of the surface of the cover plate can accommodate a specific component of the surface of the display panel, such as a circuit control component, even if the specific component of the surface of the display panel is higher than the height of other components (for example, the display component layer), The specific component can still be disposed in the accommodating space of the cover plate, thereby eliminating the distance between the cover plate and the display panel, thereby shortening the installation distance between the cover plate and the display panel, and reducing the overall thickness of the display device. It is also unnecessary to provide an additional fixing mechanism having a large thickness between the cover and the display panel. Therefore, the design of the accommodating space of the present invention increases the possibility that the display panel is assembled with other devices.

10‧‧‧Touch panel

12‧‧‧ display panel

14, 141, 142, 143, 144 ‧ ‧ cover

14a‧‧‧Upper surface

14b‧‧‧ outer surface

16‧‧‧ boards

18‧‧‧Touch element layer

20‧‧‧ display substrate

20a‧‧‧ upper surface

22‧‧‧Display component layer

24‧‧‧Protective layer

26, 261, 262, 263‧‧‧ accommodating space

26a, 261a, 262a, 263a‧‧‧ inner side wall

26b, 261b‧‧‧ top wall

26c‧‧‧Outer side wall

26d, 262d‧‧‧ short side walls

28‧‧‧Circuit control components

28a‧‧‧ top surface

30‧‧‧Packing

32‧‧‧ Cover

100, 102, 104, 106, 108‧‧‧ display devices

200‧‧‧Electronic products

202‧‧‧Decorative layer

A1‧‧‧Light transmission area

A2‧‧‧ surrounding area

A3‧‧‧Connected area

R1‧‧‧ display area

R2‧‧‧ peripheral circuit area

T1, T2, T3, T4‧‧‧ thickness

Figure 1 is a cross-sectional view showing a first embodiment of the display device of the present invention.

Fig. 2 is a schematic view showing the appearance of the cover of the display device shown in Fig. 1.

Figure 3 is a schematic cross-sectional view showing a second embodiment of the display device of the present invention.

Fig. 4 is a schematic view showing the appearance of the cover of the display device shown in Fig. 3.

Figure 5 is a cross-sectional view showing a third embodiment of the display device of the present invention.

Fig. 6 is a schematic view showing the appearance of the cover of the display device shown in Fig. 5.

Fig. 7 is a schematic view showing the appearance of the display device shown in Fig. 5 applied to an electronic product.

Figure 8 is a cross-sectional view showing a fourth embodiment of the display device of the present invention.

Figure 9 is a schematic view showing the appearance of the cover of the display device shown in Figure 8.

Figure 10 is a cross-sectional view showing a fifth embodiment of the display device of the present invention.

Figure 11 is a schematic view showing the appearance of the cover of the display device shown in Figure 10.

Please refer to Fig. 1 and Fig. 2 at the same time. Fig. 2 is a schematic view of the appearance of the cover plate 14 in Fig. 1. In order to make the drawing more clear and easy to understand, the cover plate 14 and Fig. 1 shown in Fig. 2 are up and down. On the contrary, the upper surface 14a of the cover 14 is drawn on the upper side, and other elements on the surface of the cover 14 are omitted. According to the present invention, the display device 100 includes a display panel 12 and a cover 14 disposed on the upper side of the display panel 12. The display panel 12 includes a display substrate 20, a display element layer 22, and a circuit control element 28. The display substrate 20 has a display area R1 and a peripheral circuit area R2, and the peripheral circuit area R2 is located on at least one side of the display area R1. This embodiment uses the peripheral circuit area R2 to surround the display area R1 as an example, but is not limited thereto. . The display element layer 22 is provided on one of the upper surfaces 20a of the display substrate 20 and is located in the display area R1. The display element layer 22 can be in various forms and can provide a component layer for display functions. In this embodiment, the display device layer 22 is exemplified as an organic light-emitting device layer. For example, the display device layer 22 may include an organic light-emitting device material, a driving switch device, a scan line, a signal line, an insulating layer, etc., but limit. Thus, display element layer 22 can include more than one film layer, even including a plurality of film stacks having different shape patterns. The circuit control component 28 is disposed in the peripheral circuit region R2 of the upper surface 20a of the display substrate 20, wherein the circuit control component 28 is coupled to at least one of the display component layers 22 to provide a signal for controlling the display component. The circuit control component 28 is exemplified by an integrated circuit (IC) chip, but is not limited thereto. The display panel 12 further optionally includes a protective layer 24 disposed on the upper surface 20a of the display substrate 20 to cover and cover the surface and sidewalls of the display element layer 22 to provide the protection function required for the display element layer 22, that is, The protective layer 24 is disposed between the display element layer 22 and the cover plate 14. Taking the IC wafer as an example, the thickness T2 of the circuit control element 28 is generally greater than the thickness T1 of the thin film-based display element layer 22, and may even be greater than the total thickness T3 of the display element layer 22 and the protective layer 24, such as the circuit control element 28. The thickness T2 is exemplified by 0.2 to 0.3 mm, and therefore, the top of the circuit control element 28 may be higher than the display element layer 22 and the protective layer 24.

On the other hand, the surface of the cover plate 14 defines a light-transmitting area A1 corresponding to the display area R1 of the display substrate 20, and a peripheral area A2 corresponding to the peripheral circuit area R2 of the display substrate 20. In order to shorten the vertical distance between the cover 14 and the display panel 12 and to allow the display panel 12 to be smoothly combined with the cover 14, the peripheral area A2 of the cover 14 of the present invention has an accommodation space 26 corresponding to the circuit control element 28. As shown in FIG. 1 and FIG. 2, the accommodating space 26 is a recessed structure with respect to the upper surface 14a of the cover plate 14. The accommodating space 26 of the embodiment is a recess. The upper surface 14a of the plate 14 is directed in the direction of the outer surface 14b of the cover plate 14. concave. The accommodating space 26 having a groove shape has an inner side wall 26a, an outer side wall 26c, two short side walls 26d, and a top wall 26b, wherein the short side wall 26d is located between the inner side wall 26a and the outer side wall 26c. Therefore, when the cover plate 14 is fixed to the upper side of the display panel 12, the recessed accommodating space 26 is for accommodating at least a portion of the circuit control element 28 such that the circuit control element 28 protrudes from the display element layer. The portion of the 22 and protective layer 24 (i.e., the top of the circuit control component 28) can be just received in the housing space 26 such that the top surface 28a of the top of the circuit control component 28 is higher than the upper surface 14a of the cover panel 14. The material of the cover plate 14 is exemplified by glass or plastic, but not limited thereto, and the surface of the cover plate 14 may be additionally coated with a water-blocking oxygen film layer. Moreover, in the preferred embodiment of the present invention, the upper surface 14a of the cover plate 14 may be provided with a touch element layer 18. For example, the touch element layer 18 may include a conductive electrode and an insulating layer or a protective layer. The conductive electrode may have a double layer or a single layer structure, and may include an axial electrode, a rectangular electrode, a triangular-like electrode, etc. Or the electrode of the touch function, but not limited to this. Therefore, the touch element layer 18 and the cover 14 can be considered to constitute a single-chip touch panel 10, such as a monolithic glass touch (OGS) panel. The touch element layer 18 is substantially disposed in the light-transmitting area A1 and corresponds to the display element layer 22, but is not limited thereto. In different embodiments, the touch element layer 18 is A portion of the electrode may extend to a portion other than the light transmitting region A1, for example, to the peripheral region A2, and does not completely correspond to the display element layer 22. In addition, the upper surface 14a or the outer surface 14b of the cover plate 14 may be further provided with one or more decorative layers (not shown), and the decorative layer may be located in the surrounding area A2 to provide an aesthetic effect and shield the components of the peripheral circuit area R2, and may also be improved. The chromatic aberration caused by the accommodating space 26 having a recessed structure.

In this embodiment, an adhesive 30 is used to fix the cover 14 and the display panel 12. As shown in FIG. 1, the sealant 30 is disposed between the cover plate 14 and the display substrate 20, and the sealant 30 is located in the peripheral circuit region R2 for fixing the cover plates 14 and 12 to the display panel. The sealant 30 is exemplified by a glass frit adhesive, and the thickness T4 is about 5 to 10 micrometers, but not limited thereto. Furthermore, in the embodiment, the surface of the cover 14 is further defined with a connection area A3, wherein the connection area A3 does not correspond to the display area R1 of the display substrate 20 and the peripheral circuit area R2, so the size of the cover 14 is slightly larger than the display. The size of the substrate 20 is such that when the cover 14 is fixed to the upper side of the display substrate 20, the cover 14 of the area of the connection area A3 protrudes from the display base. Board 20, but not limited to this. Furthermore, a circuit board 16 may be additionally disposed on the cover plate 14, and at least a portion of the circuit board 16 is located in the connection area A3 of the lower surface 14a of the cover plate 14. The circuit board 16 can be coupled to the touch element layer 18 for transmitting touch signals. Therefore, the circuit board 16 can be regarded as a part of the touch panel 10. The connection area A3 of the touch panel 10 is arranged to avoid interference with the accommodating space 26 . Therefore, the connection area A3 and the accommodating space 26 of the touch panel 10 are respectively disposed on different sides of the cover 14 . As can be seen from the above, since the display device 100 includes the monolithic touch panel 10 and the display panel 12, the display device 100 is a display device having a touch function.

The manufacturing method of the accommodating space 26 in the first embodiment of the present invention is as follows. For example, after the touch element layer 18 is formed on the surface of the cover 14 , the outer edging and size definition of the cover 14 are to be performed together. The accommodating space 26 is made. The manufacturing method can be divided into a physical type and a chemical type, wherein the physical processing can utilize a general drilling technique (for example, a drilling hole of a video hole or a sensing hole) to dig a groove on the upper surface 14a of the cover 14 with a mold. The grooves or grooves, and the chemical treatment can apply an etching paste at a position where the upper surface 14a is to be etched by a screen printing process, and then etch the cover plate 14 to form a groove. Another way of chemical treatment is to define the etched grooves by using a protective film or an acid resistant film with hydrofluoric acid. The manufacturing space of the present invention is not limited to the above.

Referring to FIG. 3 and FIG. 4, in the second embodiment of the present invention, the difference between the display device 102 and the first embodiment is mainly in the manner in which the accommodation space 261 is disposed. The accommodating space 261 of the embodiment is still a recessed structure, but the accommodating space 261 on the surface of the cover 141 is a recess having a gap, and has only one inner side wall 261a adjacent to the transparent area A1 without The outer side wall 26c and the short side wall 26d are shown in the first and second figures. However, the accommodating space 261 still has the top wall 261b. Therefore, the area enclosed by the top wall 261b and the inner side wall 261a forms the accommodating space 261. And the top wall 261b has a height difference or a gap with the upper surface 14a of the cover plate 141. The design of the accommodating space 261 can also be regarded as a partial thinning design of the cover plate 141, which is made by, for example, thinning the outer side of the cover plate 141 by grinding, or by the chemical treatment process in the foregoing embodiment, but not by This is limited.

Referring to FIG. 5 and FIG. 6 , the main difference between the display device 104 and the second embodiment of the third embodiment of the present invention is that the accommodating space 262 of the cover 142 is a notch having an inner portion. The side wall 262a and the cover plate 142 are respectively formed with two short side walls 262d on both sides of the notch-type accommodating space 262, but do not have the top wall 26b and the outer side wall 26c as shown in Fig. 1, wherein the short side walls 26d are respectively The inner side walls 262a are in contact with each other, that is, the accommodating space 262 is constituted by a space surrounded by the inner side wall 262a and the two short side walls 262d. Therefore, the accommodating space 262 shown in the cross-sectional view of Fig. 5 only sees the inner side wall 262a. When the display device 104 is applied to an electronic product, the display device 104 can be further disposed on the outer side of the accommodating space 262, and has a function similar to the top wall and the outer side wall, and is disposed on the periphery of the accommodating space 262. Covering the circuit control component 28, the functionality of the circuit control component 28 can be further provided. Please refer to FIG. 7. For example, when the display device 104 is applied to an electronic product 200 such as a smart phone or a tablet, the cover 32 may be a hole cover originally provided by the electronic product 200, such as an ear sound hole. , but not limited to this. It should be noted that the size and size of the outer cover 32 may have different designs depending on the shape of the electronic product. In addition, the decorative layer 202 may be disposed on the surface of the display device 104 as indicated by a broken line in FIG.

Examples of the manner in which the accommodating space 262 is fabricated include mechanical processing and non-contact processing. The mechanical treatment can firstly scribe the surface of the cover plate 142 with a cutter wheel to produce a crack depth of about 10 to 20% of the thickness of the cover plate 142, and then use mechanical stress to crack the glass, and then grind the surface by grinding. level. The non-contact treatment is exemplified by forming a crack at the beginning and the end of the scribe line, and then using the stress caused by the instantaneous heat expansion and contraction to crack the cover plate 142 along the cutting path, which has the advantage of only one cutting. No need to grind the process. However, the manner in which the accommodation space 262 is made is not limited to the above.

Referring to FIG. 8 and FIG. 9, the display device 106 of the fourth embodiment of the present invention is different from the foregoing embodiment in that the accommodating space 263 of the cover 143 has only the inner side wall 263a and no other side walls and the top wall. That is, the cover plate 143 is completely removed from the area corresponding to the circuit control element 28 to form the accommodating space 263. Therefore, in terms of the appearance of the display device 106, a recessed structure is formed at the accommodating space 263. Moreover, similarly to the third embodiment, the display device 106 of the present embodiment may further include an outer cover 32 corresponding to the circuit control element 28 to be in contact with the inner side wall 263a to form the accommodating space 263. It is disposed outside the accommodating space 263. The accommodating space 263 can be combined with the edging process in accordance with the size definition of the cover 143, and can also refer to other The method of production is not limited to the above.

Referring to FIG. 10 and FIG. 11 , the display device 108 of the fifth embodiment of the present invention is different from the first embodiment in that the accommodating space 26 of the cover 144 is a hole that penetrates the upper surface of the cover 144 . 14a and the outer surface 14b, so the accommodating space 26 does not have a top wall, but still has an inner side wall 26a and an outer side wall 26c. In addition, other components may be provided on the surface of the cover 144 to cover or shield the circuit control component 28.

In addition, the surface of the cover plate and the cover plate facing the accommodating space (for example, the inner side walls of 26a, 261a, 262a, 263a, etc.) in all the above embodiments of the present invention may be a chemically or physically strengthened surface. For example, the reinforced surface is an etched surface etched by hydrofluoric acid (HF) in such a way as to remove small cracks in the surface or to reduce the number or depth of microcracks to enhance surface strength. In addition, the surface of the cover side and the cover plate facing the accommodating space may also be coated and cured to make it a surface having a glued cured layer, which can provide a cushioning function and enhance the surface. strength.

It can be seen from the above that since the present invention provides an accommodating space in a region corresponding to the circuit control component of the cover plate, even if the thickness of the circuit control component is greater than the total thickness of the display component layer, the protective layer and the touch component layer, or the sealing material The thickness of the top can also be accommodated in the accommodating space, so that the cover plate and the display panel can be combined more closely and smoothly, so as to reduce the overall thickness of the display device without changing the position of the circuit control component. In addition, the accommodating space in the present invention is very simple to manufacture, and can even be combined with the size definition of the cover plate and the edging process, and does not require additional process cost.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10‧‧‧Touch panel

12‧‧‧ display panel

14‧‧‧ Cover

14a‧‧‧Upper surface

14b‧‧‧ outer surface

16‧‧‧ boards

18‧‧‧Touch element layer

20‧‧‧ display substrate

20a‧‧‧ upper surface

22‧‧‧Display component layer

24‧‧‧Protective layer

26‧‧‧ accommodating space

26a‧‧‧ inner side wall

26b‧‧‧ top wall

26c‧‧‧Outer side wall

28‧‧‧Circuit control components

28a‧‧‧ top surface

30‧‧‧Packing

100‧‧‧ display device

A1‧‧‧Light transmission area

A2‧‧‧ surrounding area

A3‧‧‧Connected area

R1‧‧‧ display area

R2‧‧‧ peripheral circuit area

T1, T2, T3, T4‧‧‧ thickness

Claims (17)

A display device comprising: a display panel comprising: a display substrate having a display area and a peripheral circuit area, the peripheral circuit area being located on at least one side of the display area; a display element layer disposed on the display a display surface on the upper surface of the substrate; and a circuit control component disposed on the upper surface of the display substrate and located in the peripheral circuit region; and a cover plate disposed on the display panel toward the control element of the circuit a surface of the cover plate defines a light-transmissive area and a peripheral area, wherein the light-transmissive area and the peripheral area respectively correspond to the display area of the display substrate and the peripheral circuit area, and the cover has an accommodation space In the peripheral region, the accommodating space corresponds to the circuit control component and is used to accommodate at least a portion of the circuit control component. The display device of claim 1, wherein the thickness of the circuit control element is greater than the thickness of the display element layer. The display device of claim 1 or 2, wherein a top of the circuit control element is located in the accommodating space, and a top surface of the top portion is higher than an upper surface of the cover plate. The display device of claim 1, further comprising a touch component layer disposed on the upper surface of the cover, and the cover and the touch component layer form a single-chip touch panel. The display device of claim 4, further comprising a glue disposed between the cover plate and the display substrate, wherein the sealant is located in the peripheral circuit area for fixing the cover plate and the display panel And the thickness of the circuit control component is greater than the thickness of the sealant. The display device of claim 4, wherein the receiving space of the cover is a recess, the recess being recessed from the upper surface of the cover toward the outer surface of the cover. The display device of claim 4, wherein the receiving space of the cover is a notch, and the cover is respectively formed with a side wall on both sides of the notch. The display device of claim 7, further comprising an outer cover disposed on an outer side of the accommodating space of the cover, and the outer cover and the one side wall of the cover form the accommodating space. The display device of claim 4, wherein the receiving space of the cover is a hole. The display device of claim 4, wherein the cover surface further defines a connection area, the connection area does not correspond to the display area of the display substrate and the peripheral circuit area, and the display device further comprises a circuit board. It is disposed at least in the connection area of the cover. The display device of claim 10, wherein the connection area of the touch panel and the accommodating space are respectively disposed on different sides of the cover. The display device of claim 1 or 4, wherein the display element layer is an organic light emitting display layer. The display device of claim 1 or 4, wherein the circuit control element is an integrated circuit chip. The display device of claim 1 or 4, wherein the accommodating space is a recessed structure on the cover plate, the recessed structure has a top wall, and the top wall has a height above the upper surface of the cover plate Drop. The display device of claim 1, wherein the display panel further comprises a protective layer disposed between the display element layer and the cover. The display device of claim 1, wherein the surface of the cover plate facing the accommodating space is a reinforced surface. The display device of claim 16, wherein the reinforcing surface is an etched etched surface or a surface having a cured layer.