Self light emitting type display device

• US 7,221,340 B2
• Filed: 05/18/2004
• Issued: 05/22/2007
• Est. Priority Date: 05/29/2003
• Status: Expired due to Fees

• Current Assignee: Tohoku Pioneer Company Limited (Pioneer Corporation)
• Original Assignee: Tohoku Pioneer Company Limited (Pioneer Corporation)
• Inventors: Satake, Yoichi, Matsuda, Atsusi
• Primary Examiner(s): Patel; Nitin
• Application Number:
  US10/847,588
• Publication Number:
  US 20040252086A1
• Time in Patent Office: 1,099 Days
• Field of Search: 315/169.1, 315/169.3, 315/169.4, 345/76, 345/77, 345/80, 345/92
• US Class Current: 345/76
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2320/0295 by monitoring each display pixel
• CPC Class Codes: G09G 2320/043 Preventing or counteracting the effects of ageing
• CPC Class Codes: G09G 2360/147 the originated light output being determined for each pixel
• CPC Class Codes: G09G 3/3216 using a passive matrix
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence

Abstract

Provided is a self light emitting type display device which can correct variations in characteristics of self-emitting elements arranged in a display panel, a driver IC which drives lighting of the self-emitting elements, and the like.

A self-emitting module 1 is composed of a display panel 2 on which a plurality of self-emitting elements are arranged, a flexible circuit board 3 whose one end portion is connected with the display panel, a memory 10 which is loaded on the circuit board 3 and in which data for adjusting light emission intensities of the self-emitting elements is stored, and a drive unit 5 which is loaded also on the circuit board and which is equipped with a function of generating the drive current which is for adjusting the light emission intensities of the respective light emitting elements based on the data stored in the memory. Since the memory 10 and the drive unit 5 are loaded in the self-emitting module 1, in a state in which the self-emitting module is an individual module body before the module 1 is connected with a main body substrate 6 side, intensity adjustment of the respective light emitting elements can be performed, and adjustment work for intensity prior to shipping of the product can be made easier.

Claims

1. A self light emitting type display device comprising:

a self-emitting module comprising a display panel on which a plurality of self-emitting elements are arranged, a circuit board whose one end portion is connected with the display panel to supply drive current to the respective self-emitting elements of the display panel, a memory which is loaded on the circuit board and in which data for adjusting light emission intensities of the respective light emitting elements is stored, and a drive unit which is loaded on the circuit board and which is equipped with a function of generating the drive current which is for adjusting the light emission intensities of the respective light emitting elements based on the data stored in the memory, and

a main body substrate which is connected with the other end of the circuit board in the self-emitting module and in which an operational power supply means supplying operational power source to the self-emitting module side via the circuit board is loaded.

2. The self light emitting type display device according to claim 1, wherein the circuit board in which the memory and the drive unit are loaded is constructed by an FPC (flexible printed circuit board).

3. The self light emitting type display device according to claim 1, which is constructed in such a way that a connector is connected with the other end of the circuit board and that the self-emitting module is detachably connected with the main body substrate via the connector.

4. The self light emitting type display device according to claim 2, which is constructed in such a way that a connector is connected with the other end of the circuit board and that the self-emitting module is detachably connected with the main body substrate via the connector.

5. The self light emitting type display device according to any one of claims 1 to 4, wherein the data stored in the memory is rewritable and that the memory has a non-volatile function.

6. The self light emitting type display device according to any one of claims 1 to 4, wherein self-emitting elements which emit respective R (red), G (green), and B (blue) color lights are arranged on the display panel and that data for adjusting intensities of respective colors is stored in the memory.

7. The self light emitting type display device according to claim 5, wherein self-emitting elements which emit respective R (red), G (green), and B (blue) color lights are arranged on the display panel and that data for adjusting intensities of respective colors is stored in the memory.

8. The self light emitting type display device according to claim 6, wherein the data which adjusts intensities of respective emitted color lights can be obtained by setting at predetermined values intensity and chromaticity of synthesized white light by the R, G, and B emitted from the self-emitting elements arranged on the display panel.

9. The self light emitting type display device according to claim 7, wherein the data which adjusts intensities of respective emitted color lights can be obtained by setting at predetermined values intensity and chromaticity of synthesized white light by the R, G, and B emitted from the self-emitting elements arranged on the display panel.

10. The self light emitting type display device according to any one of claims 1 to 4, wherein data related to fabrication history of the self-emitting module is stored in the memory other than the data for adjusting light emission intensities of the respective light emitting elements.

11. The self light emitting type display device according to claim 5, wherein data related to fabrication history of the self-emitting module is stored in the memory other than the data for adjusting light emission intensities of the respective light emitting elements.

12. The self light emitting type display device according to claim 6, wherein data related to fabrication history of the self-emitting module is stored in the memory other than the data for adjusting light emission intensities of the respective light emitting elements.

13. The self light emitting type display device according to claim 7, wherein data related to fabrication history of the self-emitting module is stored in the memory other than the data for adjusting light emission intensities of the respective light emitting elements.

14. The self light emitting type display device according to claim 8, wherein data related to fabrication history of the self-emitting module is stored in the memory other than the data for adjusting light emission intensities of the respective light emitting elements.

15. The self light emitting type display device according to claim 9, wherein data related to fabrication history of the self-emitting module is stored in the memory other than the data for adjusting light emission intensities of the respective light emitting elements.

16. The self light emitting type display device according to claim 6, which is constructed in such a way that the respective self-emitting elements are driven by constant current by the drive unit and that adjustment of intensities of the respective self-emitting elements which emit the respective R, G, and B color lights is executed by adjusting constant current values which are controlled by the drive unit.

17. The self light emitting type display device according to claim 7, which is constructed in such a way that the respective self-emitting elements are driven by constant current by the drive unit and that adjustment of intensities of the respective self-emitting elements which emit the respective R, G, and B color lights is executed by adjusting constant current values which are controlled by the drive unit.

18. The self light emitting type display device according to claim 8, which is constructed in such a way that the respective self-emitting elements are driven by constant current by the drive unit and that adjustment of intensities of the respective self-emitting elements which emit the respective R, G, and B color lights is executed by adjusting constant current values which are controlled by the drive unit.

19. The self light emitting type display device according to claim 9, which is constructed in such a way that the respective self-emitting elements are driven by constant current by the drive unit and that adjustment of intensities of the respective self-emitting elements which emit the respective R, G, and B color lights is executed by adjusting constant current values which are controlled by the drive unit.

20. The self light emitting type display device according to any one of claims 1 to 4, wherein the self-emitting elements are organic EL elements.