ACTIVE-MATRIX DISPLAYS WITH COMMON PIXEL CONTROL

• US 20180191978A1
• Filed: 02/27/2018
• Published: 07/05/2018
• Est. Priority Date: 12/23/2015
• Status: Active Grant

• Current Assignee: X Display Company Technology Limited (Sensinnovat BVBA)
• Original Assignee: X-Celeprint Limited
• Granted Patent: US 10,091,446 B2
• Time in Patent Office: Days
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2310/0221 with use of split matrices G09G3/3644 and G09G3/3666 take precedence
• CPC Class Codes: G09G 2310/0267 Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
• CPC Class Codes: G09G 2310/0286 Details of a shift registers arranged for use in a driving circuit
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: H04N 25/74 Circuitry for scanning or addressing the pixel array
• CPC Class Codes: H04N 25/779 Circuitry for scanning or addressing the pixel array

Abstract

An exemplary active-matrix system comprises a system substrate with pixel elements disposed in pixel rows and pixel columns, pixel circuits each controlling two or more of the pixel elements, and row and column lines, at least one of each of which is electrically connected to each pixel circuit. The number of row lines is less than the number of pixel rows, the number of column lines is less than the number of pixel columns, or the number of row lines is less than the number of pixel rows and the number of column lines is less than the number of pixel columns.

Claims

1. An active-matrix system, comprising:

a system substrate having an active area;

pixel elements disposed on, in, over, or under the system substrate, the pixel elements arranged in the active area in a pixel element array having pixel rows and pixel columns, wherein each pixel element in the pixel element array is in one of the pixel rows and one of the pixel columns;

pixel circuits disposed on, in, over, or under the system substrate in the active area in a pixel circuit array having circuit rows and circuit columns, wherein each of the pixel circuits is in one of the circuit rows or one of the circuit columns and is independent of each other of the pixel circuits, each of the pixel circuits is electrically connected to and controls two or more of the pixel elements, and the pixel circuits number less than the pixel elements;

row lines disposed on, in, over, or under the system substrate in the active area, wherein for each of the row lines, the row line is electrically connected to all of the pixel circuits in one of the circuit rows to provide information in common to all of the pixel circuits in the one circuit row, or receive information in common from all of the pixel circuits in the one circuit row, through the row line; and

column lines electrically separate from the row lines disposed on, in, over, or under the system substrate in the active area, wherein for each of the column lines, the column line is electrically connected to all of the pixel circuits in one of the circuit columns to provide information in common to all of the pixel circuits in the one circuit column, or receive information in common from all of the pixel circuits in the one circuit column, through the column line,

wherein (i) the row lines number less than the pixel rows, (ii) the column lines number less than the pixel columns, or (iii) the row lines number less than the pixel rows and the column lines number less than the pixel columns, and

wherein each of the pixel circuits comprises a pixel storage element that stores information in response to signals communicated on the row line and the column line to which the pixel circuit is connected.

2. The active-matrix system of claim 1, wherein the system substrate is a display substrate, the active area is a display area, the pixel elements are one or more of controllable light-reflective pixels, controllable light-absorbing pixels, and controllable light-emitting pixels, and the active-matrix system is an active-matrix display.

3. The active-matrix system of claim 2, wherein each of the pixel elements comprises an inorganic light-emitting diode.

4. The active-matrix system of claim 2, wherein the pixel elements controlled by a common pixel circuit comprise two or more light-controlling elements, each light-controlling element of the two or more light-controlling elements controlling a different color of visible light than each other of the two or more light-controlling elements.

5. The active-matrix system of claim 2, comprising a sensor disposed on, in, over, or under the display substrate and electrically connected to one or more of the pixel circuits.

6. The active-matrix system of claim 1, wherein the system substrate is a sensor substrate, the active area is a sensor area, the pixel elements are light-responsive pixels, and the active-matrix system is an image sensor.

7. The active-matrix system of claim 6, wherein each of the pixel elements comprises a photo-sensor.

8. The active-matrix system of claim 1, wherein each pixel element comprises a broken or separated tether.

9. The active-matrix system of claim 1, wherein the pixel circuits are digital controllers and the pixel storage element of each of the pixel circuits stores digital values corresponding to a value associated with the two or more of the pixel elements controlled by the pixel circuit.

10. The active-matrix system of claim 1, wherein (i) the row lines conduct digital signals, (ii) the column lines conduct digital signals, or (iii) both (i) and (ii).

11. The active-matrix system of claim 1, wherein (i) the row lines conduct analog signals, (ii) the column lines conduct analog signals, or (iii) both (i) and (ii).

12. The active-matrix system of claim 1, comprising (i) row drivers electrically connected to each of the row lines, (ii) column drivers electrically connected to each of the column lines, or (iii) both (i) and (ii).

13. The active-matrix system of claim 1, wherein the two or more of the pixel elements controlled by each pixel circuit are in a common pixel row or are in a common pixel column such that the two or more of the pixel elements form a one-dimensional array of pixel elements.

14. The active-matrix system of claim 1, wherein at least two of the two or more of the pixel elements controlled by each pixel circuit are in different rows and in different columns such that the two or more of the pixel elements form a two-dimensional array of pixel elements.

15. The active-matrix system of claim 1, wherein the row lines conduct pulse-width modulation signals.

16. The active-matrix system of claim 1, comprising pixel module substrates disposed on the system substrate, wherein at least one of the pixel circuits and the two or more of the pixel elements controlled by each of the at least one of the pixel circuits is disposed on each pixel module substrate.

17. The active-matrix system of claim 16, wherein each of the pixel module substrates comprises a broken or separated tether.

18. The active-matrix system of claim 1, wherein each of the pixel elements comprises one or more micro-devices that each have at least one of a width from 2 to no more than 5 μ

m, 5 to no more than 10 μ

m, 10 to no more than 20 μ

m, or 20 to no more than 50 μ

m, a length from 2 to no more than 5 μ

m, 5 to no more than 10 μ

m, 10 to no more than 20 μ

m, or 20 to no more than 50 μ

m, and a thickness from 2 to no more than 5 μ

m, 5 to no more than 10 μ

m, 10 to no more than 20 μ

m, or 20 to no more than 50 μ

m.

19. The active-matrix system of claim 1, wherein each of the pixel circuits comprises one or more micro-devices that each have at least one of a width from 2 to no more than 5 μ

m, 5 to no more than 10 μ

m, 10 to no more than 20 μ

m, or 20 to no more than 50 μ

m, a length from 2 to no more than 5 μ

m, 5 to no more than 10 μ

m, 10 to no more than 20 μ

m, or 20 to no more than 50 μ

m, and a thickness from 2 to no more than 5 μ

m, 5 to no more than 10 μ

m, 10 to no more than 20 μ

m, or 20 to no more than 50 μ

m.

20. The active-matrix system of claim 1, wherein at least a portion of the pixel circuits are disposed between the pixel elements.

21. The active-matrix system of claim 20, wherein, for each of the pixel circuits, the two or more pixel elements are disposed adjacent to at least two sides of the pixel circuit that controls the two or more pixel elements.

22. An active-matrix system, comprising:

a system substrate;

pixel elements disposed in pixel rows and pixel columns on the system substrate;

pixel circuits disposed in circuit rows and circuit columns on the system substrate, each pixel circuit controlling two or more of the pixel elements; and

a row line and a column line electrically connected to each pixel circuit,

wherein the number of row lines is less than the number of pixel rows, the number of column lines is less than the number of pixel columns, or the number of row lines is less than the number of pixel rows and the number of column lines is less than the number of pixel columns.

23. The active-matrix system of claim 22, wherein at least a portion of the pixel circuits are disposed between the pixel elements.

24. The active-matrix system of claim 23, wherein, for each of the pixel circuits, the two or more pixel elements are disposed adjacent to at least two sides of the pixel circuit that controls the two or more pixel elements.