Distortion tolerant pixel design
AssigneePlastic Logic Limited
InventorTim Von Werne
Life of this patent
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Abstract
A pixel architecture for compensating for distortions in a flexible substrate of a flexible display, including: a first layer including a thin film transistor (TFT) on a flexible substrate; a second layer disposed above said first layer including a pixel electrode coupled to said TFT for receiving a signal from said TFT; and a third layer including a color filter for filtering light displayed by said pixel, wherein said third layer is aligned to said second layer such that said color filter is substantially aligned to said pixel electrode, said alignment compensating for distortions in said first layer caused by distortions in said flexible substrate.
Claims31
A pixel architecture for compensating for distortions in a flexible substrate of a
- flexible display, comprising:
- a first layer comprising a plurality of thin film transistors arranged in a first array on a flexible substrate;
- a second layer disposed above said first layer comprising a plurality of pixel electrodes arranged in a second array such that each of said plurality of pixels is coupled to a respective thin film transistor in said first array for receiving a signal from said respective thin film transistor;
- and
- a third layer comprising a plurality of colour filters arranged in a third array with each colour filter for filtering light displayed by a pixel in said array, wherein said third array has the same pattern as said second array whereby said third layer is aligned to said second layer such that each said colour filter is aligned to said pixel electrode, thereby compensating for distortions in said first array caused by distortions in said flexible substrate.
A flexible display comprising:
- a first layer comprising a plurality of thin film transistors arranged in a first array on a flexible substrate;
- a second layer disposed above said first layer comprising a plurality of pixel electrodes arranged in a second array, each of said pixel electrodes being coupled to a respective thin film transistor for receiving a signal from said respective thin film transistor;
- a display medium for displaying an image, said medium being disposed on said second layer, and said display medium being responsive to signals on said pixel electrodes;
- and
- a third layer comprising a plurality of colour filters arranged in a third array for filtering an image displayed on said display,
- wherein said third array has the same pattern as said second array whereby said third layer is aligned to said second layer such that each of said colour filters is substantially aligned to a respective pixel electrode, and wherein at least some of said pixel electrodes and colour filters are misaligned with said thin film transistor, thereby compensating for distortions in said first layer caused by distortions in said flexible substrate.
A method of compensating for distortion when manufacturing a pixel for a display, the pixel comprising:
- a first layer comprising a plurality of thin film transistors arranged in a first array on a flexible substrate;
- a second layer disposed above said first layer comprising a plurality of pixel electrodes arranged in a second array such that each of said plurality of pixels is coupled to a respective said thin film transistor in said first array for receiving a signal from said respective thin film transistor;
- and a third layer comprising a plurality of colour filters arranged in a third array for filtering light displayed by said array of pixels, wherein said third array has the same pattern as said second array, the method comprising:
- aligning each said filter with each said respective electrode and connecting each said electrode to said thin film transistor so as to allow relative misalignment of said electrode and said thin film transistor.
A pixel for a flexible display, comprising:
- a first layer comprising a plurality of thin film transistors arranged in a first array on a flexible substrate;
- and
- a second layer disposed above said first layer comprising a plurality of pixel electrodes arranged in a second array such that each of said plurality of pixel electrodes is coupled to a respective thin film transistor in said first array for receiving a signal from said respective thin film transistor,
- wherein each of said pixel electrodes is shaped to enable each pixel electrode to be displaced laterally with respect to said respective thin film transistor during manufacture of said pixel, said displacement being caused by distortions in said flexible substrate.
Dependencies are inferred from the claim text.