Light-emitting device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Takeshi Fukunaga
Life of this patent
Estimating the term…
Abstract
A light-emitting device having the quality of an image high in homogeneity is provided. A printed wiring board (second substrate) (107) is provided facing a substrate (first substrate) (101) that has a luminous element (102) formed thereon. A PWB side wiring (second group of wirings) (110) on the printed wiring board (107) is electrically connected to element side wirings (first group of wirings) (103, 104) by anisotropic conductive films (105a, 105b). At this point, because a low resistant copper foil is used to form the PWB side wiring (110), a voltage drop of the element side wirings (103, 104) and a delay of a signal can be reduced. Accordingly, the homogeneity of the quality of an image is improved, and the operating speed of a driver circuit portion is enhanced.
Claims18
A light-emitting device, comprising:
- a first substrate;
- a luminous element provided over said first substrate;
- a current control TFT provided over said first substrate;
- a current supply line provided over said first substrate and connected with said luminous element via said current control TFT;
- a second substrate;
- a wiring for aiding said current supply line, said wiring for aiding said current supply line provided over said second substrate and electrically connected to said current supply line;
- and
- a conductor for electrically connecting said current supply line and said wiring for aiding said current supply line,
- wherein the luminous element is located between the first substrate and the second substrate.
A light-emitting device, comprising:
- a first substrate;
- a luminous element provided over said first substrate;
- a current control TFT provided over said first substrate;
- a gate control wiring provided over said first substrate for transmitting a power source signal of a gate driver circuit, a clock signal or a start signal;
- a second substrate;
- a gate control auxiliary line provided over said second substrate and electrically connected to said gate control wiring;
- a conductor for electrically connecting said gate control wiring and said gate control auxiliary line;
- and
- a sealing agent for bonding said first substrate and said second substrate together,
- wherein the luminous element is located between the first substrate and the second substrate.
A light-emitting device, comprising:
- a first substrate;
- a luminous element provided over said first substrate;
- a current control TFT provided over said first substrate;
- a current supply line provided over said first substrate and connected with said luminous element via said current control TFT;
- a second substrate;
- a wiring for aiding said current supply line, said wiring for aiding said current supply line provided over said second substrate and electrically connected to said current supply line;
- a conductor for electrically connecting said current supply line and said wiring for aiding said current supply line;
- a sealing agent for bonding said first substrate and said second substrate together;
- and
- a resin filled in a space between said first substrate and said second substrates,
- wherein the luminous element is located between the first substrate and the second substrate.
Dependencies are inferred from the claim text.