IP Library › Granted Patent US 11,455,040
Granted Patent B2
US 11,455,040 · App. 17/139,233 · Granted Sep 27, 2022

Display device

Inventors: Sheng-Nan Fan (Miao-Li County, TW); Hung-Sheng Cho (Miao-Li County, TW); Jui-Jen Yueh (Miao-Li County, TW); Yu-Huang Hsu (Miao-Li County, TW)
Assignee: INNOLUX CORPORATION
G06F3/016G06F1/1643G06F1/1652G06F3/0412G06F2203/014G06F2203/04105
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Quick Facts
Patent No.
US 11,455,040
App. No.
17/139,233
Granted
Sep 27, 2022
Kind
B2
Abstract

A display device includes a display panel, a vibrator and an adhesive layer. The vibrator is disposed on a surface of the display panel. The adhesive layer is disposed between the display panel and the vibrator, and a part of the adhesive layer contacts the display panel and another part of the adhesive layer contacts the vibrator.

Claims (30)

1. A display device, comprising:

a display panel, including a substrate and a frame;

a vibrator, disposed on the frame, wherein a portion of the frame is disposed between the substrate and the vibrator;

an intermediary frame covering the vibrator and a surface of the display panel;

an outer frame covering the intermediary frame;

an adhesive layer, disposed between the frame and the vibrator, wherein a part of the adhesive layer contacts the frame, and another part of the adhesive layer contacts the vibrator, wherein the adhesive layer has an upper layer contacting a bottom of the frame, and a lower layer contacting a top of the vibrator, wherein the vibrator is connected with the frame by the adhesive layer, the vibrator vibrates the display panel to provide tactile feedback when the vibrator vibrates at a frequency larger than or equal to 1 Hz and smaller than or equal to 250 Hz, and the vibrator vibrates the display panel to provide acoustic function and generate sound capable of being concentrated inside the display panel when the vibrator vibrates at a frequency larger than or equal to 20 Hz and smaller than or equal to 20 KHz, and wherein the vibrator has a first thickness, the frame has a second thickness, and a ratio of the first thickness to the second thickness is between 50% to 70%; and

a touch panel and a glass covering shield, wherein the display panel is disposed below the touch panel and the glass covering shield is disposed above the display panel and the touch panel.

2. The display device as claimed in claim 1 , further comprising a flexible circuit board, wherein the flexible circuit board is disposed adjacent to the vibrator, or the flexible circuit board at least partially overlaps the vibrator.

3. The display device as claimed in claim 1 , wherein the vibrator has a first electrode plate, a piezoelectric material and a second electrode plate, and the piezoelectric material is disposed between the first electrode plate and the second electrode plate.

4. The display device as claimed in claim 3 , wherein the piezoelectric material comprises a piezoelectric ceramic material or a polyvinylidene fluoride film.

5. The display device as claimed in claim 1 , wherein the display panel has a display region, the vibrator has a first area, the display region of the display panel has a second area, and a ratio of the first area to the second area is larger than or equal to 5% and smaller than or equal to 50%.

6. The display device as claimed in claim 1 , further comprising a plurality of pressure sensors disposed on the display panel.

7. The display device as claimed in claim 6 , wherein the pressure sensors are disposed at four corners of the display panel.

8. The display device as claimed in claim 1 , wherein the adhesive layer is a partial adhesive structure or a whole adhesive structure.

9. The display device as claimed in claim 1 , wherein the display panel has a display region, and the vibrator overlaps the display region.

10. The display device as claimed in claim 1 , further comprising a support substrate disposed between the vibrator and the adhesive layer.

11. The display device as claimed in claim 1 , wherein the vibrator is a double-layer vibrator having a thickness larger than or equal to 0.1 mm and smaller than or equal to 5 mm.

12. An electronic device, comprising:

a display panel, including a substrate and a frame;

a vibrator, disposed on the frame, wherein a portion of the frame is disposed between the substrate and the vibrator;

an intermediary frame covering the vibrator and a surface of the display panel;

an outer frame covering the intermediary frame;

an adhesive layer, disposed between the frame and the vibrator, wherein a part of the adhesive layer contacts the frame, and another part of the adhesive layer contacts the vibrator, wherein the adhesive layer has an upper layer contacting a bottom of the frame, and a lower layer contacting a top of the vibrator, wherein the vibrator is connected with the frame by the adhesive layer, the vibrator vibrates the display panel to provide tactile feedback when the vibrator vibrates at a frequency larger than or equal to 1 Hz and smaller than or equal to 250 Hz, and the vibrator vibrates the display panel to provide acoustic function and generate sound capable of being concentrated inside the display panel when the vibrator vibrates at a frequency larger than or equal to 20 Hz and smaller than or equal to 20 KHz, and wherein the vibrator has a first thickness, the frame has a second thickness, and a ratio of the first thickness to the second thickness is between 50% to 70%; and

a touch panel and a glass covering shield, wherein the display panel is disposed below the touch panel and the glass covering shield is disposed above the display panel and the touch panel.

13. The electronic device as claimed in claim 12 , further comprising a flexible circuit board, wherein the flexible circuit board is disposed adjacent to the vibrator, or the flexible circuit board at least partially overlaps the vibrator.

14. The electronic device as claimed in claim 12 , further comprising a plurality of pressure sensors, wherein the pressure sensors are disposed at four corners of the display panel.

15. The electronic device as claimed in claim 12 , wherein the vibrator has a first electrode plate, a piezoelectric material and a second electrode plate, and the piezoelectric material is disposed between the first electrode plate and the second electrode plate.

16. The electronic device as claimed in claim 12 , wherein the display panel has a display region, the vibrator has a first area, the display region of the display panel has a second area, and a ratio of the first area to the second area is larger than or equal to 5% and smaller than or equal to 50%.

17. The electronic device as claimed in claim 12 , further comprising a support substrate disposed between the vibrator and the adhesive layer.

18. The electronic device as claimed in claim 12 , wherein the vibrator is a double-layer vibrator having a thickness larger than or equal to 0.1 mm and smaller than or equal to 5 mm.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 27, 2022
From: FAN, SHENG-NAN; CHO, HUNG-SHENG; YUEH, JUI-JEN
To: INNOLUX CORPORATION
Reel/Frame 060323/0829 →
Priority Claims (1)
CN 201711326837.5 · Dec 13, 2017 · national
Continuity (3)
Continuation 16103308 · Aug 14, 2018
Provisional Application 62558897 · Sep 15, 2017
Related Publication 20210124423A1 · Apr 29, 2021