CN105632339B - Display device - Google Patents

Abstract

A display device includes a display panel and a complementary panel, the display panel includes: a first substrate; and a second substrate, which is arranged opposite to the first substrate and partially covers the first substrate, including a second arc-shaped edge and a second side, and the second arc-shaped edge is connected to the second side; a driving unit, which is arranged on the first substrate not covered by the second substrate; a complementary panel, which is arranged on the driving unit and includes a third arc-shaped edge and a third side, and the third arc-shaped edge is connected to the third side, wherein the third side corresponds to the second side, and the third arc-shaped edge corresponds to the second arc-shaped edge.

Description

display screen

technical field

The present invention relates to a display device, in particular to a display device with a display area approaching a circle.

Background technique

With the continuous advancement of display technology, all devices are developing toward small size, thin thickness, and light weight. Therefore, the current mainstream display devices on the market have developed from the previous cathode ray tubes to thin display devices, such as liquid crystal display devices. and organic light emitting diode devices. In particular, thin display devices can be applied in many fields, such as watches, mobile phones, notebook computers, video cameras, cameras, music players, mobile navigation devices, televisions and other display devices used in daily life.

In the past, most common display devices had a square structure; in recent years, in order to meet the needs of aesthetics and design, they have been designed to have various shapes, such as circular, triangular, rhombus and other special-shaped structures. Among them, with the development of wearable display devices such as watches, in order to approach the current common round watch shape, it is necessary to develop a quasi-circular display device.

However, in the display panel of a general display device, even if the substrate is cut with an arc-shaped edge by using a special-shaped cutting method, the display area of the display panel cannot present a perfect circle, ellipse or other circle-like shape due to the setting of the drive unit. Graphical display, but can not meet the user's requirements.

In view of this, there is an urgent need to develop a display device whose display area is close to a circle, so as to meet the user's requirement for a circle display.

Contents of the invention

The object of the present invention is to provide a display device. By using a complementary shape panel, the obtained display device can have an approximately circular display area, so as to achieve the purpose of circular display.

To achieve the above object, the display device of the present invention includes a display panel and a complementary shape panel, the display panel includes: a first substrate; and a second substrate, which is arranged opposite to the first substrate and partially covers the first substrate, and the second The substrate includes a second arc-shaped edge and a second side, the end of the second arc-shaped edge is connected to the end of the second side; a drive unit is arranged on the first substrate not covered by the second substrate; and a The complementary shape substrate is arranged on the drive unit and includes a third arc edge and a third side, wherein the end point of the third arc edge is connected to the end point of the third side, wherein the third side is connected to the second The sides correspond to each other, and the end points of the third arc edge and the end points of the second arc edge correspond to each other.

In the display device of the present invention, the driving unit includes a driving chip and a first flexible circuit board, the first flexible circuit board is correspondingly arranged on a first side of the first substrate, and the driving chip is arranged on the second Between the substrate and the first flexible circuit board.

The display device of the present invention may further include a polarizing component, and the second substrate is interposed between the first substrate and the polarizing component. In addition, it may optionally include another polarizing component and a backlight module, the first substrate and the second substrate form a display panel, the display panel is interposed between these polarizing components, and the first substrate is interposed between the backlight module and the complementary panel between.

In the display device of the present invention, the first substrate further includes a plurality of connection sides and a first arc edge, the connection sides are between the first arc edge and the first side, and the first arc edge The endpoints of and the endpoints of the first side are connected to the endpoints of the connection sides.

In the display device of the present invention, the complementary shape panel may further include a fourth side and a plurality of connecting sides, and these connecting sides are between the third curved edge and the fourth side, and the third curved edge The endpoints of and the endpoints of the fourth side are connected to the endpoints of the connecting sides.

In addition, in the display device of the present invention, the complementary shape panel partially overlaps with the second substrate. Wherein, the area of the first substrate is larger than the area of the second substrate; and/or the area of the first substrate is larger than the area of the complementary panel; and/or the area of the second substrate is larger than the area of the complementary panel.

In the display device of the present invention, the conformal panel may further include a third substrate and a fourth substrate, the third substrate is located between the first substrate and the fourth substrate, and the area of the third substrate is larger than that of the fourth substrate. Wherein, the complementary panel may further optionally include a polarizing component, and the fourth substrate is interposed between the polarizing component and the third substrate.

The display device of the present invention may further include a second flexible circuit board corresponding to the third side of the complementary shape panel; and preferably corresponding to the first flexible circuit board.

In the display device of the present invention, the conformal panel can be a liquid crystal display panel or an organic light emitting diode panel.

In addition, the display device of the present invention may further include an adhesive layer and an outer substrate, the adhesive layer is disposed on the second substrate and the conformal panel, and the adhesive layer is interposed between the second substrate and the outer substrate.

The display device of the present invention may further include a plurality of touch components located on the second substrate or the outer substrate.

In the display device of the present invention, the display area of the second substrate and the display area of the complementary shape panel jointly form a circle.

In the present invention, by using a complementary shape panel, wherein the third side of the complementary shape panel and the second side of the second substrate correspond to each other, and the end point of the third arc edge of the complementary shape panel and the second substrate The endpoints of the second arc-shaped edge correspond to each other, so that the shape of the display area obtained after splicing the complementary shape panel and the second substrate can be close to a circle, thereby realizing the purpose of a circular display.

Description of drawings

FIG. 1A is a top view of a display device according to a preferred embodiment of the present invention.

FIG. 1B is a top view of a display device according to a preferred embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a display device according to another preferred embodiment of the present invention.

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

FIG. 4 is a schematic cross-sectional view of a display device according to another preferred embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view of a display device according to another preferred embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view of a display device according to another preferred embodiment of the present invention.

FIG. 7A is a top view of a display device according to another preferred embodiment of the present invention.

FIG. 7B is a top view of a display device according to another preferred embodiment of the present invention.

FIG. 7C is a top view of a display device according to another preferred embodiment of the present invention.

FIG. 7D is a top view of a display device according to another preferred embodiment of the present invention.

FIG. 7E is a top view of a display device according to another preferred embodiment of the present invention.

Explanation of symbols in the attached drawings:

11 first substrate; 111 first arc edge; 112 first side; 12 second substrate; 121 second arc edge; 122 second side; 15 fixing glue; 16, 24 polarizing components; 17 adhesive layer; 18 outer substrate; 20 backlight module; 21 complementary shape panel; 21a third substrate; 21b fourth substrate; 213 the fourth side; 214 the connecting side; 22 the second flexible circuit board; 225 the inner edge; 121a, 121b, 211a, 211b endpoints.

Detailed ways

The implementation of the present invention is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied by other different specific embodiments, and various modifications and changes can be made to the details in this specification for different viewpoints and applications without departing from the spirit of the present invention.

FIG. 1A and FIG. 2 are respectively a top view and a schematic cross-sectional view of a quasi-circular display device according to a preferred embodiment of the present invention.

As shown in FIG. 1A and FIG. 2, in the structure of the display device of this embodiment and its manufacturing method, first, a first substrate 11 is provided, which is a substrate with a special-shaped structure through a special-shaped cutting method, and the special-shaped structure Indicates that its outline is not a regular N-gon (N is a positive integer greater than 3), ellipse or circle, but presents an irregular shape, such as a partially cut circle or a circle with a protruding part added . In other embodiments, the first substrate 11 can also be a substrate with a non-special-shaped structure, such as a circle or an ellipse. The material of the first substrate 11 can be glass, metal, plastic, polymer composite material or a structure formed by a mixture thereof, and the thickness is between 0.01 mm (mm) and 1.5 mm, preferably, it is made of glass or metal material The thickness of the finished first substrate 11 is between 0.01 mm and 0.3 mm.

In this embodiment, the first substrate 11 has a first arc edge 111 and a first side 112, the two ends of the first arc edge 111 are respectively connected to the two ends of the first side 112, the first arc The edge 111 determines the main outline of the display device, and the linear first side 112 is used as a driving circuit connection side; however, in other embodiments of the present invention, the first substrate 11 may have other shapes, such as The first substrate 11 may have a protruding portion (tongue) at the first side 112, that is, there is a connection side between the end point of the first side 112 and the end point of the first arc edge 111, and the connection The sides can be arcs or straight lines (not shown, refer to the shape of the complementary panel in FIG. 1B ). Here, the first substrate 11 can be a thin film transistor substrate commonly used in the art, on which a plurality of thin film transistor components (not shown) can be disposed. The semiconductor layer material of these thin film transistor components may be amorphous silicon (a-Si), low temperature polysilicon (LTPS) or metal oxide semiconductor (IGZO), etc. The first substrate 11 may also be provided with electrodes, driving circuits, organic light emitting diode components, and the like. The first thin film transistor substrate 11 may have a central pixel area and a peripheral area surrounding the display area, and both areas may have thin film transistors, passive components and driving lines.

In addition, as shown in FIG. 2 , on the peripheral area of the first substrate 11 adjacent to the first side 112, a driving unit is also provided, including a driving chip 13 and a first flexible circuit board 14. In this embodiment , the driving chip 13 is relatively adjacent to the display area, and the first flexible circuit board 14 is relatively adjacent to the first side 112, part of the first flexible circuit board 14 links the circuits in the peripheral area of the first substrate 11, and the rest of the The first flexible circuit board 14 is bent to cover the first side 112 or the back side of the first substrate 11 , and is connected to the main circuit board. The design of the driving unit may be a COG (chip onglass) design in which an integrated circuit chip (IC) is combined with a flexible printed circuit (FPC) in this embodiment. In other embodiments, the driver chip 13 and the first flexible circuit board 14 can be integrated into a flexible circuit board structure with an IC package, such as a tape-and-reel type chip on film package (chip on film, COF), Or tape carrier package (tape carrier package, TCP). Wherein, when assembling the driving unit, an insulating fixing glue 15 can be selectively used to fix the driving chip 13 and the first flexible circuit board 14 on the first substrate 11; however, in other implementations of the present invention In an example, the fixing glue 15 can be replaced by a fixing glue film.

As shown in FIG. 1A and FIG. 2 , then, a second substrate 12 is provided, which is also a substrate with a special-shaped structure through special-shaped cutting. In this embodiment, the second substrate 12 includes a second arc-shaped edge 121 and a second side 122, the two ends of the second arc-shaped edge 121 are respectively connected with the two ends of the second side 122, the second side The side 122 is straight and arranged corresponding to the first side 112 . Preferably, the area of the second substrate 12 is smaller than that of the first substrate 11 . In other embodiments, the area of the second substrate 12 may be slightly larger than the area of the first substrate 11 . In this embodiment, the appearance of the second substrate 12 is similar to that of the first substrate 11; however, in other embodiments of the present invention, the appearance of the second substrate 12 and the first substrate 11 may be different, such as on the second side There is a protrusion (tongue) at 122, that is, there is a connection side between the end point of the second side 122 and the end point of the second arc edge 121, and this connection side can be an arc or a straight line (not shown). , can refer to the shape of the complementary shape panel in Fig. 1B). The material of the second substrate 12 can be glass, metal, plastic, polymer composite material or a structure formed by a mixture thereof, the thickness is between 0.01 mm (mm) and 1.5 mm, preferably, it is made of glass or metal material The thickness of the finished first substrate 11 is between 0.01 mm and 0.3 mm.

As shown in FIG. 1A and FIG. 2, the second substrate 12 can be a color filter substrate commonly used in the art, and can be provided with a color filter layer (not shown) and a light-shielding layer 123 (black matrix BM). 123 covers the peripheral area and exposes a circular display area (DAA). In this embodiment, the light-shielding layer 123 is arc-shaped, and its structure corresponds to the second arc-shaped edge 121, and its two ends correspond to the second side 122 However, in other embodiments of the present invention, the light shielding layer 123 also has a straight line portion corresponding to the second side 122 . A sealing member (not shown) between the first substrate 11 and the second substrate 12 is covered by the light shielding layer 123 . A color filter layer (not shown in the figure) can also be optionally disposed on the first TFT substrate 11 . The second substrate 12 can also be a common touch substrate in this technical field, and can be provided with structures such as sensing electrodes and its driving circuit. Alternatively, in terms of OLED display device design, the second substrate 12 can be a covering protection substrate for blocking water and oxygen from eroding and damaging the OLED components on the first substrate 11 . In this embodiment, the first arc-shaped edge 111 corresponds to the second arc-shaped edge 121 when paired, and the two can be aligned or have a distance. If the distance between the first side 112 and the second side 122 is d (the width of the circuit bonding area), the distance between the first arc-shaped edge 111 and the second arc-shaped edge 121 is between 0 and d, preferably, the first arc-shaped edge 111 and the second arc-shaped edge The pitch d of 121 is substantially zero.

Then, as shown in Figure 2, the first substrate 11 and the second substrate 12 are paired, and a polarizer 16 is stacked on the second substrate 12 to complete the display panel (as shown in Figure 5, if it is a liquid crystal display panel, then the second There is also another polarizer 16 on the side opposite to the second substrate 12 on the first substrate 11, and a backlight module 20 is arranged on the back of the display panel; if it is an organic light emitting diode panel, it can only have the above-mentioned single polarizer 16 structure, or Removable polarizer assembly 16). The thickness of the polarizing component 16 is between 0.01 mm and 1.5 mm. Preferably, the thickness of the polarizing component 16 with circular polarization optical effect is between 0.05 mm and 0.25 mm. In this embodiment, a liquid crystal layer (not shown), an alignment layer (not shown) and a sealant (a type of encapsulation layer, not shown) are provided between the first substrate 11 and the second substrate 12. The display panel prepared in the embodiment is a liquid crystal display panel. However, in other embodiments of the present invention, an organic light emitting diode component (not shown) and an encapsulation layer (a type of encapsulation layer, not shown in the figure) may be provided between the first substrate 11 and the second substrate 12. The obtained display panel is an organic light emitting diode display panel.

In the aforementioned steps, the first substrate 11 and the second substrate 12 with a special-shaped structure are first provided for combination; cutting to form the first substrate 11 and the second substrate 12 with special-shaped structures.

As shown in FIG. 1A, FIG. 2 and FIG. 3, after the first substrate 11 and the second substrate 12 are paired to form a display panel, the first substrate not covered by the second substrate 12 at the driver chip 13 of the corresponding driver unit On the base plate 11, a complementary shape panel 21 is assembled to compensate the display area and outline to make it approximately circular. The complementary shape panel 21 includes two third arc-shaped edges 211, a third side 212 and a fourth side 213, wherein the two ends of each third arc-shaped edge 211 are respectively connected to the third side 212 and the fourth side 213 are connected to form a special-shaped structure. As shown in FIG. 1A, in this embodiment, the third side 212 and the fourth side 213 are linear, the third side 212 is adjacent to the second side 122, and the fourth side 213 is Adjacent to and corresponding to the first side 122 . As shown in FIG. 1B, in other embodiments, the complementary shape substrate 21 has a protruding portion, and there is a connecting side 214 between the third curved edge 211 and the fourth side 213, and the connecting side 214 can be a straight line. Or an arc, the curve connecting the side 214 is different from the third arc edge 211 , the third side 212 and the fourth side 213 .

As shown in Fig. 1A and Fig. 2, the complementary shape panel 21 includes a third substrate 21a, and this third substrate 21a has an optical or circuit structure such as a thin film transistor, a driving circuit, a display unit or a light shielding layer 223, and has its display area DAA. The inner edge 225 of the light-shielding layer 223 is defined, and the light-shielding layer 223 is similar to the second substrate 12 , which can be arc-shaped or have a straight portion adjacent to the third side 212 , and can have an encapsulation structure shielded by the light-shielding layer 223 . Preferably, the display unit of the conformal panel 21 in this embodiment is an organic light emitting diode, and its surface has a protective structure formed by stacking organic and inorganic layers to resist water and oxygen damage. The material of the third substrate 21a can be the same as that of the display panel, such as glass, plastic or other polymer materials, and the thickness ranges are similar and different. The complementary panel 21 can also be an electro-phoretic display (EPD) or a reflector. As shown in Figures 3 to 6, a polarizer 24 can be attached to the upper or lower surface (not shown) of the complementary shape panel 21. In this embodiment, the complementary shape panel 21 is a light-emitting diode display panel, so it can A polarizing component 24 is attached to reduce the display contrast caused by the reflection of frontal ambient light. As shown in Figure 4, the complementary shape panel 21 can also have a fourth substrate 21b, which covers part of the surface of the third substrate 21a, and has a packaging structure such as glass glue (frit) between the third substrate and the third substrate, which is used for packaging protection and isolation. For the use of water and oxygen, its material and thickness can be described with reference to other substrates. Preferably, the thickness of the third substrate 21a and the fourth substrate 21b can be smaller than the first substrate 11 and the second substrate 12, so as to thin the thickness of the overall display device . The polarizing component 24 is located on the upper surface of the fourth substrate 21b.

In addition, a drive unit is also provided on the side adjacent to the fourth side 213 of the complementary shape panel 21, including a second flexible circuit board 22, which corresponds to the first flexible circuit board 14, and can also be bent to The back of the first base plate 11 is connected with the first flexible circuit board 14 to the circuit main board. As shown in Fig. 1A, Fig. 1B and Fig. 2, the second flexible circuit board 22 of the driving unit of the present embodiment may be a flexible printed circuit board (flexible print circuit, FPC) and a driving chip 23 integrated into an IC The packaged flexible circuit board structure is, for example, a tape-and-reel chip flip-chip package (chip on film, COF), or a tape-and-reel chip carrier package (tape carrier package, TCP). In other embodiments, the driving unit of the complementary panel 21 and the display panel 11 can be of the same COG design. Likewise, the second flexible circuit board 22 can be fixed with insulating fixing glue or adhesive film.

As shown in FIGS. 2 to 5 , the third side 212 of the complementary shape panel 21 is adjacent to the second side 122 of the second substrate 12 , and has a distance from the polarizer 16 . There is a distance between the polarizer 24 of the complementary shape panel 21 and the third side 212 , and there is also a distance between the polarizer 24 and the fourth side 213 . As shown in Fig. 6, the third side 212 of the complementary shape panel 21 spans the second side 122 of the second substrate 12, the second side 122 of the third side 212 has a distance, and the third side 212 is between the second side Between the edge 122 and the polarizer assembly 16 .

FIG. 7A to FIG. 7E show the so-called corresponding relationship in the present invention. The second arc edge 121 has two ends 121a and 121b, and the third arc edge 211 has two ends 211a and 211b, wherein the end 121a is adjacent to or even overlaps the end 211a, and the end 121b is adjacent to or even overlaps the end 211b. The second side 122 is adjacent to the third side 212 and has similar or even the same length. The third side 212 of the complementary panel 21 can span the second side 122 of the second substrate 12 , so that the complementary panel 21 and the second substrate 12 partially overlap.

Finally, as shown in FIGS. 2 to 6 , an adhesive layer 17 and an outer substrate 18 are laminated on the first pair of side substrates 12 and the complementary shape substrate 21 to complete the circular display panel of this embodiment. In this embodiment, the adhesive layer 17 can be a high-penetration adhesive material commonly used in the field, such as optical clear adhesive (OCA) or optical clear resin (OCR). By setting the adhesive layer, the gap between the complementary shape panel 21 and the polarizer 16 can be filled, and the step difference between the second substrate 12, the complementary shape panel 21, the polarizer 16 and the polarizer 24 can be filled, and the display device can be flattened. The outer substrate 18 may be a pressure-resistant, scratch-resistant, and corrosion-resistant cover glass (CG), which may also have a touch-sensing component.

Through the above-mentioned steps, the circular-like display device including a display panel and a complementary shape panel 21 in this embodiment can be obtained, and the setting of the complementary shape panel 21 can make the second substrate 12 and the complementary shape panel 21 together The formed display area or outline is substantially circular, and the specific image displayed on the complementary substrate 2 can achieve the purpose of compensating for the inability of the display panel to emit light in areas other than the second substrate 12, presenting an image approximately circular. , in this way, the requirement of circular display can be achieved.

In addition, the display device prepared by the foregoing embodiments of the present invention can be applied to any electronic device known in the art that requires a display screen, such as monitors, mobile phones, notebook computers, video cameras, cameras, music players, mobile navigation devices , TV, watches, etc.

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the present invention should be based on the scope of claims in the application, rather than limited to the above-mentioned embodiments.

Claims (17)

1. a kind of display equipment, including：

One first substrate；

One second substrate, is oppositely arranged with the first substrate and part covers the first substrate, which includes one second Curved edge and a second side, and second curved edge is connect with the second side；

One driving unit is set on the unlapped first substrate of the second substrate；And

One mends shape panel, on the driving unit and includes a third camber edge and a third side, the third arc-shaped side Edge is connect with the third side,

Wherein, which corresponds with the second side, and the third curved edge and second curved edge are mutual It is corresponding.

2. display equipment as described in claim 1, wherein the driving unit includes a driving chip and one first flexible circuit Plate, wherein first flexible circuit board are correspondingly arranged on a first side of the first substrate, and the driving chip system is set to and is somebody's turn to do Between second substrate and first flexible circuit board.

3. display equipment as described in claim 1, wherein including a polarization elements, the second substrate is between the first substrate And between the polarization elements.

4. display equipment as claimed in claim 3, wherein including another polarization elements and a backlight module, the first substrate And the second substrate forms a display panel, the display panel is between those polarization elements, and the first substrate is between the back of the body Between optical module and the benefit shape panel.

5. display equipment as claimed in claim 2, wherein the first substrate includes plural number connection side and one first arc-shaped side Edge, those connection sides are between first curved edge and the first side, first curved edge and the first side It connect side connection with those.

6. display equipment as described in claim 1, wherein the benefit shape panel includes that a four side and plural number connect side, Those connection sides between the third curved edge and the four side, the third curved edge and the four side with should The connection of a little connection sides.

7. display equipment as described in claim 1, wherein the benefit shape panel overlaps with the second substrate part.

8. display equipment as described in claim 1, wherein the area of the first substrate is more than the area of the second substrate.

9. display equipment as described in claim 1, wherein the area of the first substrate is more than the area of the benefit shape panel.

10. display equipment as described in claim 1, wherein the area of the second substrate is more than the area of the benefit shape panel.

11. display equipment as described in claim 1, wherein the benefit shape panel includes a third substrate and a tetrabasal, is somebody's turn to do For third substrate between the first substrate and the tetrabasal, the area of the third substrate is more than the area of the tetrabasal.

12. display equipment as claimed in claim 11, wherein the benefit shape panel includes a polarization elements, which is situated between Between the polarization elements and the third substrate.

13. display equipment as claimed in claim 2, wherein including one second flexible circuit board, be correspondingly arranged at the benefit shape panel The third side on, and corresponded with first flexible circuit board.

14. display equipment as described in claim 1, wherein the benefit shape substrate is an organic LED panel.

15. display equipment as described in claim 1, wherein including an adhesion layer and an outside substrate, which is set to should On second substrate and the benefit shape panel, and the adhesion layer is between the second substrate and the outside substrate.

16. display equipment as described in claim 1, wherein including plural touch control component, be located on the second substrate.

17. display equipment as claimed in claim 15, wherein including plural touch control component, be located on the outside substrate.