A kind of difference structure of wearing square screen upper and lower R angle

Abstract

This invention discloses a differential R-corner structure for a wearable square screen, relating to the field of watch LCD display technology. It includes a square screen body, an IC, and a watch face. The square screen body further includes a TFT substrate at the bottom and a CF substrate disposed above the TFT substrate. Thin-film transistors are arranged in an array on the TFT substrate. An imaging unit is provided on the square screen body within the area covered by the thin-film transistors, and one end of the square screen body is connected to an FPC cable. The four corners of the square screen body are all arranged in an arc shape. Because the R-corners at the bottom are designed to be larger than those at the top, a certain range of shrinkage space is created during the process of increasing the R-corners at the bottom. This increased R-corner shrinkage space provides expanded space for the smart watch face packaging area, forming a thickened sealing part. Therefore, when the square screen body is assembled with the watch, the contact area at the sealing point can be increased, improving the sealing performance.

Description

Technical Field

[0001] This invention relates to the field of watch LCD display technology, specifically to a wearable square screen with a differential R-angle structure at the top and bottom. Background Technology

[0002] With the development of mobile technology, many traditional electronic products have begun to add mobile functions. For example, watches, which used to be used only to tell time, can now connect to the Internet via smartphones or home networks to display incoming call information, Twitter and news feeds, weather information, and other content. Smartwatches are smart wearable products that use a cluster of sensor chips to achieve their basic functions with the help of a smartphone. A smartwatch is a watch with a built-in intelligent system that connects to the network via a mobile phone system to achieve some of the functions of a mobile phone. Its main components must include a screen and a time display as the most basic elements of a watch.

[0003] Currently, existing square screens for smartwatches, due to their shape limitations, require equal top and bottom radius (R-angle) sizes when mounted on the watch face. The sealing areas used to encapsulate and secure the square screen in these areas are also of the same size. Existing technologies employ a stepped groove design, aligning the stepped surfaces of the groove with the screen edges and using water-absorbing adhesive and liquid glue for overall sealing and waterproofing. However, the width of the stepped groove occupies space within the smartwatch face; expanding it outwards increases the watch's wall thickness, while expanding it inwards occupies internal space. Therefore, we provide a structure that utilizes varying screen R-angle sizes to increase the sealing area within a limited space, resulting in a different top and bottom R-angle structure for wearable square screens. Summary of the Invention

[0004] The purpose of this invention is to provide a differential R-angle structure for the upper and lower corners of a wearable square screen to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wearable square screen with a differential R-angle structure, comprising a square screen body, an IC, and a watch dial. The square screen body further includes a TFT substrate at the bottom and a CF substrate disposed above the TFT substrate. Thin-film transistors are arranged in an array on the TFT substrate. An imaging unit is provided on the square screen body within the area covered by the thin-film transistors. One end of the square screen body is connected to an FPC cable. The four corners of the square screen body are arranged in an arc shape. The two corners of the square screen body near the FPC cable end are provided with a lower curved surface, and the two corners of the square screen body away from the FPC cable end are provided with an upper curved surface. The R-angle of the upper curved surface is smaller than that of the lower curved surface. The inner side of the top of the watch dial is provided with a stepped groove for encapsulating the square screen body. When the square screen body is encapsulated inside the stepped groove, the two corners of the stepped groove near the lower curved surface end form a thickened sealing part as the R-angle of the lower curved surface increases.

[0006] Preferably, the square screen body at the FPC cable connection point is provided with a driving part for connecting the IC. The driving part is located on one side of the imaging part. A heat dissipation layer is provided on the back of the square screen body within the driving part area, and the metal contacts for connecting the FPC cable are located within the angle range between the IC and the imaging part.

[0007] Preferably, the square screen body further includes a second TFT substrate and a third TFT substrate sequentially disposed below the first TFT substrate. The second TFT substrate has a second thin-film transistor arranged in an array. The first and second thin-film transistors on the first and second TFT substrates are uniformly staggered along the diagonal direction, and the edge contour of the imaging part does not obstruct the second thin-film transistors. The third TFT substrate at the edge of the imaging part has an R-angle elimination band along its contour direction. The R-angle elimination band covers the edge arrangement of the imaging part. The third thin-film transistors are arranged at equal intervals on the TFT substrate at the R-angle elimination band. The size of the third thin-film transistors is smaller than that of the first and second thin-film transistors, and the third thin-film transistors near the edge of the imaging part are all completely arranged.

[0008] Preferably, a heat dissipation layer two is provided on the TFT substrate three inside the R-angle elimination zone.

[0009] Preferably, both the first heat dissipation layer and the second heat dissipation layer are formed by thermally conductive metals arranged in a sheet-like manner.

[0010] Compared with the prior art, the beneficial effects of the present invention are: the difference structure of the upper and lower R-angles of the wearable square screen is that the R-angles on both sides of its bottom end are designed to be larger than the R-angles on both sides of its top end. As the bottom end increases from small to large, a certain range of shrinkage space is generated. The increase of the R-angle shrinkage space provides an expanded space for the smart watch face packaging part, forming a thickened sealing part. Thus, when the square screen body is assembled with the watch, the contact area of ​​the sealing part can be increased, and the sealing performance can be improved. Attached Figure Description

[0011] Figure 1 This is a top view of the square screen body structure according to Embodiment 1 of the present invention;

[0012] Figure 2 This is a schematic diagram of the bottom view structure of the square screen body according to Embodiment 1 of the present invention;

[0013] Figure 3 This is a side view of the square screen body structure according to Embodiment 1 of the present invention;

[0014] Figure 4 This is a top view of the internal structure of the square screen body and the smartwatch in the packaged state according to Embodiment 1 of the present invention;

[0015] Figure 5 This is a top view of the internal structure of the smartwatch in Embodiment 1 of the present invention without the square screen body;

[0016] Figure 6 This is a side view of the square screen body structure according to Embodiment 2 of the present invention;

[0017] Figure 7 This is a schematic diagram of the three back-side structures of the TFT substrate in Embodiment 2 of the present invention;

[0018] Figure 8 This is a schematic diagram of the structure of thin-film transistor 1, thin-film transistor 2 and thin-film transistor 3 in Embodiment 2 of the present invention to eliminate the unclear state of the R angle.

[0019] In the diagram: 1. Square screen body; 2. Upper curved surface; 3. Lower curved surface; 4. FPC cable; 5. Driving unit; 6. Imaging unit; 7. Watch dial; 8. Stepped groove; 9. Thickened sealing part; 10. CF substrate; 11. TFT substrate one; 12. TFT substrate two; 13. TFT substrate three; 14. Heat dissipation layer two; 15. Round corner elimination strip; 16. Thin film transistor one; 17. Thin film transistor two; 18. Thin film transistor three; 19. Heat dissipation layer one. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1

[0022] Please see Figure 1-5 A wearable square screen with a differential R-angle structure includes a square screen body 1, an IC, and a watch face 7 for fixing the square screen body 1. The square screen body 1 also includes a TFT substrate 11 located at the bottom and a CF substrate 10 disposed above the TFT substrate 11, forming a liquid crystal layer encapsulated between the TFT substrate 11 and the CF substrate 10. Thin film transistors 16 are arranged in an array on the TFT substrate 11. Under the control of the applied driving voltage, the liquid crystal layer rotates in an orientation to produce the effect of image display by utilizing the color filtering effect of the CF substrate 10 and the array of thin film transistors 16 on the TFT substrate 11. An imaging part 6 is provided on the square screen body 1 within the area covered by the thin film transistors 16. The imaging part 6 is the area where the user can directly obtain the image after the smart watch is assembled. It can be circular or square as shown in the figure. One end of the square screen body 1 is connected to an FPC cable 4 for powering the TFT substrate 11 and the IC.

[0023] Furthermore, the four corners of the square screen body 1 are arranged in an arc shape. The arc-shaped square screen body 1 is formed by rounding the edges of the TFT substrate 11 and the CF substrate. The two corners of the square screen body 1 near the FPC cable 4 are provided with a lower curved surface 3, and the two corners of the square screen body 1 away from the FPC cable 4 are provided with an upper curved surface 2. The upper curved surface 2 and the lower curved surface 3 are the end face positions of the square screen body 1 after rounding. The R angle of the upper curved surface 2 is smaller than that of the lower curved surface 3. The inner side of the top of the watch dial 7 is provided with a stepped groove 8 for the encapsulation of the square screen body 1. When the square screen body 1 is encapsulated inside the stepped groove 8, the two corners of the stepped groove 8 near the lower curved surface 3 form a thickened sealing part 9 as the R angle of the lower curved surface 3 increases.

[0024] Specifically, taking a complete rectangular square screen body 1 as an example (without rounded corners), its top and bottom widths are consistent. Further, the upper curved surface 2 and the lower curved surface 3 are rounded with the same radius. At this time, the top and bottom widths of the square screen body 1 are still consistent. After the square screen body is assembled, the width of the encapsulation connection part with the smart watch face is equal everywhere, and the width is set as a. The increase of the bottom R-angle provided in this application will inevitably require the removal of more non-display areas at the bottom of the square screen body 1. The removal of more areas can generate more support and fixing areas for the encapsulation part of the watch face 7. At this time, excluding the lower curved surface 3, the sealing width value between the square screen body 1 and the watch face 7 after the R-angle change is still a, while the sealing width between the square screen body 1 and the watch face 7 at the lower curved surface 3 is a+x (x is any value), and a+x is greater than a, thereby increasing the sealing area and increasing the sealing and waterproof performance of the display screen and the watch.

[0025] The square screen body 1 at the connection part of the FPC cable 4 is provided with a driving part 5 for connecting the IC. The driving part 5 is located on one side of the imaging part 6. The back of the square screen body 1 within the driving part 5 is provided with a heat dissipation layer 19. Both the heat dissipation layer 19 and the heat dissipation layer 14 are formed by thermally conductive metal in a sheet-like arrangement. The metal contacts used for connecting the FPC cable 4 are located within the angle range between the IC and the imaging part 6.

[0026] Example 2

[0027] Please see Figure 1-8 The difference between this embodiment and Embodiment 1 is that the square screen body 1 further includes a second TFT substrate 12 and a third TFT substrate 13 sequentially disposed below the first TFT substrate 11. The second TFT substrate 12 has a second thin-film transistor 17 arranged in an array. The first thin-film transistor 16 and the second thin-film transistor 17 on the first TFT substrate 11 and the second TFT substrate 12 are evenly staggered along the diagonal direction, and the edge contour of the imaging part 6 does not obstruct the second thin-film transistor 17. The third TFT substrate 13 at the edge of the imaging part 6 has a corner elimination band 15 along its contour direction. The corner elimination band 15 covers the edge arrangement of the imaging part 6. The third thin-film transistor 18 is arranged at equal intervals on the TFT substrate 13 at the corner elimination band 15. The size of the third thin-film transistor 18 is smaller than that of the first thin-film transistor 16 and the second thin-film transistor 17, and the third thin-film transistor 18 near the edge of the imaging part 6 is completely arranged.

[0028] Considering the limitations of the fabrication process for the array of thin-film transistors (TFT-16) on the TFT substrate 11, gaps exist between the arrayed TFT-16, affecting display clarity. Therefore, we utilize thin-film transistors (TFT-17) on the TFT substrate 12 to fill the gaps in the TFT substrate 11 with color to increase the clarity of the inner side of the imaging section 6. Furthermore, since the R-angle of the imaging section 6 is arc-shaped, it is easy to cause uncertain cutting of the arrayed TFT-16, resulting in jagged image visual errors at the edges of the imaging section 6. The aforementioned range of the thin-film transistors (TFT-17) is... Since the area of ​​the main body is smaller than that of the imaging unit 6, the R-corner will not obstruct the thin-film transistor 17. Instead, the arrangement of the thin-film transistor 17 will increase the clarity of the display. In order to eliminate the jaggedness of the R-corner, the smaller, arrayed thin-film transistors 18 are evenly distributed to fill the gaps on the inner edge of the R-corner, thus brightening and improving the clarity of the edge. When the user observes the imaging unit 6, the overall clarity of the square screen body 1 is improved, and the jaggedness of the R-corner is not clear or obvious, thus eliminating the problem of unclear imaging caused by the shape setting of the display area in the R-corner.

[0029] A heat dissipation layer 2 14 is provided on the TFT substrate 3 13 inside the R-corner elimination zone 15. The heat dissipation layer 2 14 covers the entire area excluding the R-corner elimination zone 15, and its coverage area is wider, which can effectively dissipate heat from the screen body 1. The heat dissipation layer 2 14 is formed by thermally conductive metal in a sheet-like arrangement, such as copper sheet or aluminum sheet.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wear square screen up and down R angle difference structure, including square screen body (1), IC and watch dial (7), the square screen body (1) further includes TFT substrate one (11) located at the bottom end and CF substrate (10) arranged above the TFT substrate one (11), the thin film transistor one (16) is arranged in array shape on the TFT substrate one (11), the imaging part (6) is provided on the square screen body (1) in the thin film transistor one (16) covering area, and one end of the square screen body (1) is connected with FPC flat cable (4), characterized in that: The four corner positions of the square screen body (1) are arranged in a circular arc shape, two corner positions of the square screen body (1) near one end of the FPC flat cable (4) are provided with lower curved surfaces (3), two corner positions of the square screen body (1) away from one end of the FPC flat cable (4) are provided with upper curved surfaces (2), the R angle of the upper curved surface (2) part is smaller than the R angle of the lower curved surface (3) part, the inside of the top end of the watch dial (7) is provided with a stepped groove (8) for packaging the square screen body (1), when the square screen body (1) is packaged inside the stepped groove (8), the two corner positions of the stepped groove (8) near one end of the lower curved surface (3) form a thickened sealing part (9) with the increase of the R angle of the lower curved surface (3), the square screen body (1) at the connection position of the FPC flat cable (4) is provided with a driving part (5) for connecting the IC, the driving part (5) is located on one side of the imaging part (6), the back surface of the square screen body (1) in the driving part (5) interval is provided with a heat dissipation layer one (19), and the metal contact for connecting the FPC flat cable (4) is located in the angle range between the IC and the imaging part (6); The square screen body (1) further comprises TFT substrate two (12) and TFT substrate three (13) arranged in sequence below the TFT substrate one (11), the TFT substrate two (12) is arranged in an array shape, the TFT substrate one (11) and the TFT substrate two (12) are arranged in a diagonal direction, the setting range of the TFT substrate two (17) is smaller than the area of the imaging part (6), and the edge contour of the imaging part (6) does not block the TFT substrate two (17), the TFT substrate three (13) at the edge position of the imaging part (6) is provided with an R angle elimination zone (15) along the contour direction, the R angle elimination zone (15) covers the edge of the imaging part (6), the TFT substrate three (13) at the R angle elimination zone (15) is arranged with TFT substrate three (18) at equal intervals, the size specification of the TFT substrate three (18) is smaller than that of the TFT substrate one (16) and the TFT substrate two (17), the TFT substrate three (18) is evenly distributed and filled in the inside edge gap of the R angle, and the TFT substrate three (18) near the edge of the imaging part (6) is arranged completely.

2. The wearable square-on-square R-angle difference structure according to claim 1, characterized in that: The TFT substrate three (13) inside the R angle elimination zone (15) is provided with a heat dissipation layer two (14).

3. The wearable square-on-square R-angle difference structure according to claim 2, characterized in that: The heat dissipation layer one (19) and the heat dissipation layer two (14) are both arranged in a sheet shape by a heat-conducting metal.

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