Display Panel

• US 20080272985A1
• Filed: 11/24/2004
• Published: 11/06/2008
• Est. Priority Date: 12/16/2003
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Van Dijk, Roy
• Application Number:
  US10/596,414
• Publication Number:
  US 20080272985A1
• Time in Patent Office: Days
• US Class Current: 345/55
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G09G 2300/0443 with several sub-pixels for the same colour in a pixel, not specifically used to display gradations G09G3/364 takes precedence
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/3433 using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices using liquid crystal devices G09G3/36; using electrochromic devices G09G3/38

Abstract

A display panel comprises a plurality of pixels (1-4; 22; 57). Each of the pixels (1-4; 22; 57) comprises a plurality of sub-pixel elements (5-9; 31-46; 48-56) occupying respective continuous sub-pixel element areas within a pixel area. At least two non-adjacent sub-pixel elements (5,7; 45, 46; 52,53) are coupled to receive substantially a same driving signal. The coupling may be realized via a conductor (21) or by coupling the at least two non-adjacent sub-pixel elements (5,7; 45,46; 52,53) to respective driver circuits receiving substantially a same input signal.

Claims

1. Display panel comprising a plurality of pixels (1-4;

22;

57), each comprising a plurality of sub-pixel elements (5-9;

31-46;

48-56) occupying respective continuous sub-pixel element areas within a pixel area, at least two non-adjacent sub-pixel elements (5,7;

45,46;

52,53) being coupled to receive substantially a same driving signal.

2. Display panel according to claim 1, each of the pixels (1-4;

22;

57) comprising sub-pixel members formed by either the at least two sub-pixel elements coupled to receive the same driving signal or a sub-pixel element (5-9;

31-46;

48-56) coupled to receive a unique driving signal, respective sizes of areas occupied by the respective sub-pixel members forming a series of increasing sizes.

3. Display panel according to claim 2, the series having an ordinal x, a cumulative value of the sizes of the members with ordinal x or lower increasing according to a power law of the ordinal x.

4. Display panel according to claim 3, the series having N members, the cumulative value of the sizes as a fraction of the cumulative value for x=N increasing substantially with the ordinal x as:

(x/N)^γ

, wherein γ

is an exponent, with 1≦

γ

≦

4.

5. Display panel according to claim 1, the display panel being an electromechanical display panel.

6. Display panel according to claim 1, the at least two non-adjacent sub-pixel elements being coupled via a conductor (21;

47;

58).

7. Display panel according to claim 1, the at least two non-adjacent sub-pixel elements being coupled to respective drivers (17, 18a) receiving substantially a same input signal.

8. Display panel according to claim 1, each of the plurality of pixels (14;

22;

57) comprising a first and a second sub-pixel for providing light of mutually differing colors, parts of a display area occupied by sub-pixel elements belonging to the first sub-pixel being interspersed with parts of the display area occupied by sub-pixel elements belonging to the second sub-pixel.

9. Display device comprising a display panel according to claim 1;

and a driver for providing driving signals to sub-pixel elements (5,7;

45,46;

52,53).